source: protocols/purple/purple.c @ 61fc056

/***************************************************************************\
*                                                                           *
*  BitlBee - An IRC to IM gateway                                           *
*  libpurple module - Main file                                             *
*                                                                           *
*  Copyright 2009-2012 Wilmer van der Gaast <wilmer@gaast.net>              *
*                                                                           *
*  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.,  *
*  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.              *
*                                                                           *
\***************************************************************************/

#include "bitlbee.h"
#include "bpurple.h"
#include "help.h"

#include <stdarg.h>

#include <glib.h>
#include <purple.h>

#if !PURPLE_VERSION_CHECK(2, 12, 0)
#define PURPLE_MESSAGE_REMOTE_SEND 0x10000
#endif

GSList *purple_connections;

/* This makes me VERY sad... :-( But some libpurple callbacks come in without
   any context so this is the only way to get that. Don't want to support
   libpurple in daemon mode anyway. */
static bee_t *local_bee;

static char *set_eval_display_name(set_t *set, char *value);

void purple_request_input_callback(guint id, struct im_connection *ic,
                                   const char *message, const char *who);

void purple_transfer_cancel_all(struct im_connection *ic);

/* purple_request_input specific stuff */
typedef void (*ri_callback_t)(gpointer, const gchar *);

struct request_input_data {
        ri_callback_t data_callback;
        void *user_data;
        struct im_connection *ic;
        char *buddy;
        guint id;
};

struct purple_roomlist_data {
        GSList *chats;
        gint topic;
        gboolean initialized;
};


struct im_connection *purple_ic_by_pa(PurpleAccount *pa)
{
        GSList *i;
        struct purple_data *pd;

        for (i = purple_connections; i; i = i->next) {
                pd = ((struct im_connection *) i->data)->proto_data;
                if (pd->account == pa) {
                        return i->data;
                }
        }

        return NULL;
}

static struct im_connection *purple_ic_by_gc(PurpleConnection *gc)
{
        return purple_ic_by_pa(purple_connection_get_account(gc));
}

static gboolean purple_menu_cmp(const char *a, const char *b)
{
        while (*a && *b) {
                while (*a == '_') {
                        a++;
                }
                while (*b == '_') {
                        b++;
                }
                if (g_ascii_tolower(*a) != g_ascii_tolower(*b)) {
                        return FALSE;
                }

                a++;
                b++;
        }

        return (*a == '\0' && *b == '\0');
}

static char *purple_get_account_prpl_id(account_t *acc)
{
        /* "oscar" is how non-purple bitlbee calls it,
         * and it might be icq or aim, depending on the username */
        if (g_strcmp0(acc->prpl->name, "oscar") == 0) {
                return (g_ascii_isdigit(acc->user[0])) ? "prpl-icq" : "prpl-aim";
        }

        return acc->prpl->data;
}

static gboolean purple_account_should_set_nick(account_t *acc)
{
        /* whitelist of protocols that tend to have numeric or meaningless usernames, and should
         * always offer the 'alias' as a nick.  this is just so that users don't have to do
         * 'account whatever set nick_format %full_name'
         */
        char *whitelist[] = {
                "prpl-hangouts",
                "prpl-eionrobb-funyahoo-plusplus",
                "prpl-icq",
                "prpl-line",
                NULL,
        };
        char **p;

        for (p = whitelist; *p; p++) {
                if (g_strcmp0(acc->prpl->data, *p) == 0) {
                        return TRUE;
                }
        }

        return FALSE;
}

static void purple_init(account_t *acc)
{
        char *prpl_id = purple_get_account_prpl_id(acc);
        PurplePlugin *prpl = purple_plugins_find_with_id(prpl_id);
        PurplePluginProtocolInfo *pi = prpl->info->extra_info;
        PurpleAccount *pa;
        GList *i, *st;
        set_t *s;
        char help_title[64];
        GString *help;
        static gboolean dir_fixed = FALSE;

        /* Layer violation coming up: Making an exception for libpurple here.
           Dig in the IRC state a bit to get a username. Ideally we should
           check if s/he identified but this info doesn't seem *that* important.
           It's just that fecking libpurple can't *not* store this shit.

           Remember that libpurple is not really meant to be used on public
           servers anyway! */
        if (!dir_fixed) {
                PurpleCertificatePool *pool;
                irc_t *irc = acc->bee->ui_data;
                char *dir;

                dir = g_strdup_printf("%s/purple/%s", global.conf->configdir, irc->user->nick);
                purple_util_set_user_dir(dir);
                g_free(dir);

                purple_blist_load();
                purple_prefs_load();

                if (proxytype == PROXY_SOCKS4A) {
                        /* do this here after loading prefs. yes, i know, it sucks */
                        purple_prefs_set_bool("/purple/proxy/socks4_remotedns", TRUE);
                }

                /* re-create the certificate cache directory */
                pool = purple_certificate_find_pool("x509", "tls_peers");
                dir = purple_certificate_pool_mkpath(pool, NULL);
                purple_build_dir(dir, 0700);
                g_free(dir);

                dir_fixed = TRUE;
        }

        help = g_string_new("");
        g_string_printf(help, "BitlBee libpurple module %s (%s).\n\nSupported settings:",
                        (char *) acc->prpl->name, prpl->info->name);

        if (pi->user_splits) {
                GList *l;
                g_string_append_printf(help, "\n* username: Username");
                for (l = pi->user_splits; l; l = l->next) {
                        g_string_append_printf(help, "%c%s",
                                               purple_account_user_split_get_separator(l->data),
                                               purple_account_user_split_get_text(l->data));
                }
        }

        /* Convert all protocol_options into per-account setting variables. */
        for (i = pi->protocol_options; i; i = i->next) {
                PurpleAccountOption *o = i->data;
                const char *name;
                char *def = NULL;
                set_eval eval = NULL;
                void *eval_data = NULL;
                GList *io = NULL;
                GSList *opts = NULL;

                name = purple_account_option_get_setting(o);

                switch (purple_account_option_get_type(o)) {
                case PURPLE_PREF_STRING:
                        def = g_strdup(purple_account_option_get_default_string(o));

                        g_string_append_printf(help, "\n* %s (%s), %s, default: %s",
                                               name, purple_account_option_get_text(o),
                                               "string", def);

                        break;

                case PURPLE_PREF_INT:
                        def = g_strdup_printf("%d", purple_account_option_get_default_int(o));
                        eval = set_eval_int;

                        g_string_append_printf(help, "\n* %s (%s), %s, default: %s",
                                               name, purple_account_option_get_text(o),
                                               "integer", def);

                        break;

                case PURPLE_PREF_BOOLEAN:
                        if (purple_account_option_get_default_bool(o)) {
                                def = g_strdup("true");
                        } else {
                                def = g_strdup("false");
                        }
                        eval = set_eval_bool;

                        g_string_append_printf(help, "\n* %s (%s), %s, default: %s",
                                               name, purple_account_option_get_text(o),
                                               "boolean", def);

                        break;

                case PURPLE_PREF_STRING_LIST:
                        def = g_strdup(purple_account_option_get_default_list_value(o));

                        g_string_append_printf(help, "\n* %s (%s), %s, default: %s",
                                               name, purple_account_option_get_text(o),
                                               "list", def);
                        g_string_append(help, "\n  Possible values: ");

                        for (io = purple_account_option_get_list(o); io; io = io->next) {
                                PurpleKeyValuePair *kv = io->data;
                                opts = g_slist_append(opts, kv->value);
                                /* TODO: kv->value is not a char*, WTF? */
                                if (strcmp(kv->value, kv->key) != 0) {
                                        g_string_append_printf(help, "%s (%s), ", (char *) kv->value, kv->key);
                                } else {
                                        g_string_append_printf(help, "%s, ", (char *) kv->value);
                                }
                        }
                        g_string_truncate(help, help->len - 2);
                        eval = set_eval_list;
                        eval_data = opts;

                        break;

                default:
                        /** No way to talk to the user right now, invent one when
                        this becomes important.
                        irc_rootmsg( acc->irc, "Setting with unknown type: %s (%d) Expect stuff to break..\n",
                                     name, purple_account_option_get_type( o ) );
                        */
                        g_string_append_printf(help, "\n* [%s] UNSUPPORTED (type %d)",
                                               name, purple_account_option_get_type(o));
                        name = NULL;
                }

                if (name != NULL) {
                        s = set_add(&acc->set, name, def, eval, acc);
                        s->flags |= ACC_SET_OFFLINE_ONLY;
                        s->eval_data = eval_data;
                        g_free(def);
                }
        }

        g_snprintf(help_title, sizeof(help_title), "purple %s", (char *) acc->prpl->name);
        help_add_mem(&global.help, help_title, help->str);
        g_string_free(help, TRUE);

        s = set_add(&acc->set, "display_name", NULL, set_eval_display_name, acc);
        s->flags |= ACC_SET_ONLINE_ONLY;

        if (pi->options & OPT_PROTO_MAIL_CHECK) {
                s = set_add(&acc->set, "mail_notifications", "false", set_eval_bool, acc);
                s->flags |= ACC_SET_OFFLINE_ONLY;

                s = set_add(&acc->set, "mail_notifications_handle", NULL, NULL, acc);
                s->flags |= ACC_SET_OFFLINE_ONLY | SET_NULL_OK;
        }

        if (strcmp(prpl->info->name, "Gadu-Gadu") == 0) {
                s = set_add(&acc->set, "gg_sync_contacts", "true", set_eval_bool, acc);
        }

        if (g_strcmp0(prpl->info->id, "prpl-line") == 0) {
                s = set_add(&acc->set, "line-auth-token", NULL, NULL, acc);
                s->flags |= SET_HIDDEN;
        }

        /* Go through all away states to figure out if away/status messages
           are possible. */
        pa = purple_account_new(acc->user, prpl_id);
        for (st = purple_account_get_status_types(pa); st; st = st->next) {
                PurpleStatusPrimitive prim = purple_status_type_get_primitive(st->data);

                if (prim == PURPLE_STATUS_AVAILABLE) {
                        if (purple_status_type_get_attr(st->data, "message")) {
                                acc->flags |= ACC_FLAG_STATUS_MESSAGE;
                        }
                } else if (prim != PURPLE_STATUS_OFFLINE) {
                        if (purple_status_type_get_attr(st->data, "message")) {
                                acc->flags |= ACC_FLAG_AWAY_MESSAGE;
                        }
                }
        }
        purple_accounts_remove(pa);
}

static void purple_sync_settings(account_t *acc, PurpleAccount *pa)
{
        PurplePlugin *prpl = purple_plugins_find_with_id(pa->protocol_id);
        PurplePluginProtocolInfo *pi = prpl->info->extra_info;
        GList *i;

        for (i = pi->protocol_options; i; i = i->next) {
                PurpleAccountOption *o = i->data;
                const char *name;
                set_t *s;

                name = purple_account_option_get_setting(o);
                s = set_find(&acc->set, name);
                if (s->value == NULL) {
                        continue;
                }

                switch (purple_account_option_get_type(o)) {
                case PURPLE_PREF_STRING:
                case PURPLE_PREF_STRING_LIST:
                        purple_account_set_string(pa, name, set_getstr(&acc->set, name));
                        break;

                case PURPLE_PREF_INT:
                        purple_account_set_int(pa, name, set_getint(&acc->set, name));
                        break;

                case PURPLE_PREF_BOOLEAN:
                        purple_account_set_bool(pa, name, set_getbool(&acc->set, name));
                        break;

                default:
                        break;
                }
        }

        if (pi->options & OPT_PROTO_MAIL_CHECK) {
                purple_account_set_check_mail(pa, set_getbool(&acc->set, "mail_notifications"));
        }

        if (g_strcmp0(prpl->info->id, "prpl-line") == 0) {
                const char *name = "line-auth-token";
                purple_account_set_string(pa, name, set_getstr(&acc->set, name));
        }
}

static void purple_login(account_t *acc)
{
        struct im_connection *ic = imcb_new(acc);
        struct purple_data *pd;

        if ((local_bee != NULL && local_bee != acc->bee) ||
            (global.conf->runmode == RUNMODE_DAEMON && !getenv("BITLBEE_DEBUG"))) {
                imcb_error(ic,  "Daemon mode detected. Do *not* try to use libpurple in daemon mode! "
                           "Please use inetd or ForkDaemon mode instead.");
                imc_logout(ic, FALSE);
                return;
        }
        local_bee = acc->bee;

        /* For now this is needed in the _connected() handlers if using
           GLib event handling, to make sure we're not handling events
           on dead connections. */
        purple_connections = g_slist_prepend(purple_connections, ic);

        ic->proto_data = pd = g_new0(struct purple_data, 1);
        pd->account = purple_account_new(acc->user, purple_get_account_prpl_id(acc));
        pd->input_requests = g_hash_table_new_full(g_direct_hash, g_direct_equal,
                                                   NULL, g_free);
        pd->next_request_id = 0;
        purple_account_set_password(pd->account, acc->pass);
        purple_sync_settings(acc, pd->account);

        if (purple_account_should_set_nick(acc)) {
                pd->flags = PURPLE_OPT_SHOULD_SET_NICK;
        }

        purple_account_set_enabled(pd->account, "BitlBee", TRUE);

        if (set_getbool(&acc->set, "mail_notifications") && set_getstr(&acc->set, "mail_notifications_handle")) {
                imcb_add_buddy(ic, set_getstr(&acc->set, "mail_notifications_handle"), NULL);
        }
}

static void purple_logout(struct im_connection *ic)
{
        struct purple_data *pd = ic->proto_data;

        if (!pd) {
                return;
        }

        while (ic->groupchats) {
                imcb_chat_free(ic->groupchats->data);
        }

        if (pd->filetransfers) {
                purple_transfer_cancel_all(ic);
        }

        purple_account_set_enabled(pd->account, "BitlBee", FALSE);
        purple_connections = g_slist_remove(purple_connections, ic);
        purple_accounts_remove(pd->account);
        imcb_chat_list_free(ic);
        g_free(pd->chat_list_server);
        g_hash_table_destroy(pd->input_requests);
        g_free(pd);
}

static int purple_buddy_msg(struct im_connection *ic, char *who, char *message, int flags)
{
        PurpleConversation *conv;
        struct purple_data *pd = ic->proto_data;

        if (!strncmp(who, PURPLE_REQUEST_HANDLE, sizeof(PURPLE_REQUEST_HANDLE) - 1)) {
                guint request_id = atoi(who + sizeof(PURPLE_REQUEST_HANDLE));
                purple_request_input_callback(request_id, ic, message, who);
                return 1;
        }

        if ((conv = purple_find_conversation_with_account(PURPLE_CONV_TYPE_IM,
                                                          who, pd->account)) == NULL) {
                conv = purple_conversation_new(PURPLE_CONV_TYPE_IM,
                                               pd->account, who);
        }

        purple_conv_im_send(purple_conversation_get_im_data(conv), message);

        return 1;
}

static GList *purple_away_states(struct im_connection *ic)
{
        struct purple_data *pd = ic->proto_data;
        GList *st, *ret = NULL;

        for (st = purple_account_get_status_types(pd->account); st; st = st->next) {
                PurpleStatusPrimitive prim = purple_status_type_get_primitive(st->data);
                if (prim != PURPLE_STATUS_AVAILABLE && prim != PURPLE_STATUS_OFFLINE) {
                        ret = g_list_append(ret, (void *) purple_status_type_get_name(st->data));
                }
        }

        return ret;
}

static void purple_set_away(struct im_connection *ic, char *state_txt, char *message)
{
        struct purple_data *pd = ic->proto_data;
        GList *status_types = purple_account_get_status_types(pd->account), *st;
        PurpleStatusType *pst = NULL;
        GList *args = NULL;

        for (st = status_types; st; st = st->next) {
                pst = st->data;

                if (state_txt == NULL &&
                    purple_status_type_get_primitive(pst) == PURPLE_STATUS_AVAILABLE) {
                        break;
                }

                if (state_txt != NULL &&
                    g_strcasecmp(state_txt, purple_status_type_get_name(pst)) == 0) {
                        break;
                }
        }

        if (message && purple_status_type_get_attr(pst, "message")) {
                args = g_list_append(args, "message");
                args = g_list_append(args, message);
        }

        purple_account_set_status_list(pd->account,
                                       st ? purple_status_type_get_id(pst) : "away",
                                       TRUE, args);

        g_list_free(args);
}

static char *set_eval_display_name(set_t *set, char *value)
{
        account_t *acc = set->data;
        struct im_connection *ic = acc->ic;

        if (ic) {
                imcb_log(ic, "Changing display_name not currently supported with libpurple!");
        }

        return NULL;
}

/* Bad bad gadu-gadu, not saving buddy list by itself */
static void purple_gg_buddylist_export(PurpleConnection *gc)
{
        struct im_connection *ic = purple_ic_by_gc(gc);

        if (set_getstr(&ic->acc->set, "gg_sync_contacts")) {
                GList *actions = gc->prpl->info->actions(gc->prpl, gc);
                GList *p;
                for (p = g_list_first(actions); p; p = p->next) {
                        if (((PurplePluginAction *) p->data) &&
                            purple_menu_cmp(((PurplePluginAction *) p->data)->label,
                                            "Upload buddylist to Server") == 0) {
                                PurplePluginAction action;
                                action.plugin = gc->prpl;
                                action.context = gc;
                                action.user_data = NULL;
                                ((PurplePluginAction *) p->data)->callback(&action);
                                break;
                        }
                }
                g_list_free(actions);
        }
}

static void purple_gg_buddylist_import(PurpleConnection *gc)
{
        struct im_connection *ic = purple_ic_by_gc(gc);

        if (set_getstr(&ic->acc->set, "gg_sync_contacts")) {
                GList *actions = gc->prpl->info->actions(gc->prpl, gc);
                GList *p;
                for (p = g_list_first(actions); p; p = p->next) {
                        if (((PurplePluginAction *) p->data) &&
                            purple_menu_cmp(((PurplePluginAction *) p->data)->label,
                                            "Download buddylist from Server") == 0) {
                                PurplePluginAction action;
                                action.plugin = gc->prpl;
                                action.context = gc;
                                action.user_data = NULL;
                                ((PurplePluginAction *) p->data)->callback(&action);
                                break;
                        }
                }
                g_list_free(actions);
        }
}

static void purple_add_buddy(struct im_connection *ic, char *who, char *group)
{
        PurpleBuddy *pb;
        PurpleGroup *pg = NULL;
        struct purple_data *pd = ic->proto_data;

        if (group && !(pg = purple_find_group(group))) {
                pg = purple_group_new(group);
                purple_blist_add_group(pg, NULL);
        }

        pb = purple_buddy_new(pd->account, who, NULL);
        purple_blist_add_buddy(pb, NULL, pg, NULL);
        purple_account_add_buddy(pd->account, pb);

        purple_gg_buddylist_export(pd->account->gc);
}

static void purple_remove_buddy(struct im_connection *ic, char *who, char *group)
{
        PurpleBuddy *pb;
        struct purple_data *pd = ic->proto_data;

        pb = purple_find_buddy(pd->account, who);
        if (pb != NULL) {
                PurpleGroup *group;

                group = purple_buddy_get_group(pb);
                purple_account_remove_buddy(pd->account, pb, group);

                purple_blist_remove_buddy(pb);
        }

        purple_gg_buddylist_export(pd->account->gc);
}

static void purple_add_permit(struct im_connection *ic, char *who)
{
        struct purple_data *pd = ic->proto_data;

        purple_privacy_permit_add(pd->account, who, FALSE);
}

static void purple_add_deny(struct im_connection *ic, char *who)
{
        struct purple_data *pd = ic->proto_data;

        purple_privacy_deny_add(pd->account, who, FALSE);
}

static void purple_rem_permit(struct im_connection *ic, char *who)
{
        struct purple_data *pd = ic->proto_data;

        purple_privacy_permit_remove(pd->account, who, FALSE);
}

static void purple_rem_deny(struct im_connection *ic, char *who)
{
        struct purple_data *pd = ic->proto_data;

        purple_privacy_deny_remove(pd->account, who, FALSE);
}

static void purple_get_info(struct im_connection *ic, char *who)
{
        struct purple_data *pd = ic->proto_data;

        serv_get_info(purple_account_get_connection(pd->account), who);
}

static void purple_keepalive(struct im_connection *ic)
{
}

static int purple_send_typing(struct im_connection *ic, char *who, int flags)
{
        PurpleTypingState state = PURPLE_NOT_TYPING;
        struct purple_data *pd = ic->proto_data;

        if (flags & OPT_TYPING) {
                state = PURPLE_TYPING;
        } else if (flags & OPT_THINKING) {
                state = PURPLE_TYPED;
        }

        serv_send_typing(purple_account_get_connection(pd->account), who, state);

        return 1;
}

static void purple_chat_msg(struct groupchat *gc, char *message, int flags)
{
        PurpleConversation *pc = gc->data;

        purple_conv_chat_send(purple_conversation_get_chat_data(pc), message);
}

struct groupchat *purple_chat_with(struct im_connection *ic, char *who)
{
        /* No, "of course" this won't work this way. Or in fact, it almost
           does, but it only lets you send msgs to it, you won't receive
           any. Instead, we have to click the virtual menu item.
        PurpleAccount *pa = ic->proto_data;
        PurpleConversation *pc;
        PurpleConvChat *pcc;
        struct groupchat *gc;

        gc = imcb_chat_new( ic, "BitlBee-libpurple groupchat" );
        gc->data = pc = purple_conversation_new( PURPLE_CONV_TYPE_CHAT, pa, "BitlBee-libpurple groupchat" );
        pc->ui_data = gc;

        pcc = PURPLE_CONV_CHAT( pc );
        purple_conv_chat_add_user( pcc, ic->acc->user, "", 0, TRUE );
        purple_conv_chat_invite_user( pcc, who, "Please join my chat", FALSE );
        //purple_conv_chat_add_user( pcc, who, "", 0, TRUE );
        */

        /* There went my nice afternoon. :-( */

        struct purple_data *pd = ic->proto_data;
        PurplePlugin *prpl = purple_plugins_find_with_id(pd->account->protocol_id);
        PurplePluginProtocolInfo *pi = prpl->info->extra_info;
        PurpleBuddy *pb = purple_find_buddy(pd->account, who);
        PurpleMenuAction *mi;
        GList *menu;

        void (*callback)(PurpleBlistNode *, gpointer); /* FFFFFFFFFFFFFUUUUUUUUUUUUUU */

        if (!pb || !pi || !pi->blist_node_menu) {
                return NULL;
        }

        menu = pi->blist_node_menu(&pb->node);
        while (menu) {
                mi = menu->data;
                if (purple_menu_cmp(mi->label, "initiate chat") ||
                    purple_menu_cmp(mi->label, "initiate conference")) {
                        break;
                }
                menu = menu->next;
        }

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

        /* Call the fucker. */
        callback = (void *) mi->callback;
        callback(&pb->node, mi->data);

        return NULL;
}

void purple_chat_invite(struct groupchat *gc, char *who, char *message)
{
        PurpleConversation *pc = gc->data;
        PurpleConvChat *pcc = PURPLE_CONV_CHAT(pc);
        struct purple_data *pd = gc->ic->proto_data;

        serv_chat_invite(purple_account_get_connection(pd->account),
                         purple_conv_chat_get_id(pcc),
                         message && *message ? message : "Please join my chat",
                         who);
}

void purple_chat_set_topic(struct groupchat *gc, char *topic)
{
        PurpleConversation *pc = gc->data;
        PurpleConvChat *pcc = PURPLE_CONV_CHAT(pc);
        struct purple_data *pd = gc->ic->proto_data;
        PurplePlugin *prpl = purple_plugins_find_with_id(pd->account->protocol_id);
        PurplePluginProtocolInfo *pi = prpl->info->extra_info;

        if (pi->set_chat_topic) {
                pi->set_chat_topic(purple_account_get_connection(pd->account),
                                   purple_conv_chat_get_id(pcc),
                                   topic);
        }
}

void purple_chat_kick(struct groupchat *gc, char *who, const char *message)
{
        PurpleConversation *pc = gc->data;
        char *str = g_strdup_printf("kick %s %s", who, message);

        purple_conversation_do_command(pc, str, NULL, NULL);
        g_free(str);
}

void purple_chat_leave(struct groupchat *gc)
{
        PurpleConversation *pc = gc->data;

        purple_conversation_destroy(pc);
}

struct groupchat *purple_chat_join(struct im_connection *ic, const char *room, const char *nick, const char *password,
                                   set_t **sets)
{
        struct purple_data *pd = ic->proto_data;
        PurplePlugin *prpl = purple_plugins_find_with_id(pd->account->protocol_id);
        PurplePluginProtocolInfo *pi = prpl->info->extra_info;
        GHashTable *chat_hash;
        PurpleConversation *conv;
        struct groupchat *gc;
        GList *info, *l;
        GString *missing_settings = NULL;

        if (!pi->chat_info || !pi->chat_info_defaults ||
            !(info = pi->chat_info(purple_account_get_connection(pd->account)))) {
                imcb_error(ic, "Joining chatrooms not supported by this protocol");
                return NULL;
        }

        if ((conv = purple_find_conversation_with_account(PURPLE_CONV_TYPE_CHAT,
                                                          room, pd->account))) {
                purple_conversation_destroy(conv);
        }

        chat_hash = pi->chat_info_defaults(
                purple_account_get_connection(pd->account), room
        );

        for (l = info; l; l = l->next) {
                struct proto_chat_entry *pce = l->data;

                if (strcmp(pce->identifier, "handle") == 0) {
                        g_hash_table_replace(chat_hash, "handle", g_strdup(nick));
                } else if (strcmp(pce->identifier, "password") == 0) {
                        g_hash_table_replace(chat_hash, "password", g_strdup(password));
                } else if (strcmp(pce->identifier, "passwd") == 0) {
                        g_hash_table_replace(chat_hash, "passwd", g_strdup(password));
                } else {
                        char *key, *value;

                        key = g_strdup_printf("purple_%s", pce->identifier);
                        str_reject_chars(key, " -", '_');

                        if ((value = set_getstr(sets, key))) {
                                /* sync from bitlbee to the prpl */
                                g_hash_table_replace(chat_hash, (char *) pce->identifier, g_strdup(value));
                        } else if ((value = g_hash_table_lookup(chat_hash, pce->identifier))) {
                                /* if the bitlbee one was empty, sync from prpl to bitlbee */
                                set_setstr(sets, key, value);
                        }

                        g_free(key);
                }

                if (pce->required && !g_hash_table_lookup(chat_hash, pce->identifier)) {
                        if (!missing_settings) {
                                missing_settings = g_string_sized_new(32);
                        }
                        g_string_append_printf(missing_settings, "%s, ", pce->identifier);
                }

                g_free(pce);
        }

        g_list_free(info);

        if (missing_settings) {
                /* remove the ", " from the end */
                g_string_truncate(missing_settings, missing_settings->len - 2);

                imcb_error(ic, "Can't join %s. The following settings are required: %s", room, missing_settings->str);

                g_string_free(missing_settings, TRUE);
                g_hash_table_destroy(chat_hash);
                return NULL;
        }

        /* do this before serv_join_chat to handle cases where prplcb_conv_new is called immediately (not async) */
        gc = imcb_chat_new(ic, room);

        serv_join_chat(purple_account_get_connection(pd->account), chat_hash);

        g_hash_table_destroy(chat_hash);

        return gc;
}

void purple_chat_list(struct im_connection *ic, const char *server)
{
        PurpleRoomlist *list;
        struct purple_data *pd = ic->proto_data;
        PurplePlugin *prpl = purple_plugins_find_with_id(pd->account->protocol_id);
        PurplePluginProtocolInfo *pi = prpl->info->extra_info;

        if (!pi || !pi->roomlist_get_list) {
                imcb_log(ic, "Room listing unsupported by this purple plugin");
                return;
        }

        g_free(pd->chat_list_server);
        pd->chat_list_server = (server && *server) ? g_strdup(server) : NULL;

        list = purple_roomlist_get_list(pd->account->gc);

        if (list) {
                struct purple_roomlist_data *rld = list->ui_data;
                rld->initialized = TRUE;

                purple_roomlist_ref(list);
        }
}

/* handles either prpl->chat_(add|free)_settings depending on the value of 'add' */
static void purple_chat_update_settings(account_t *acc, set_t **head, gboolean add)
{
        PurplePlugin *prpl = purple_plugins_find_with_id((char *) acc->prpl->data);
        PurplePluginProtocolInfo *pi = prpl->info->extra_info;
        GList *info, *l;

        if (!pi->chat_info || !pi->chat_info_defaults) {
                return;
        }

        /* hack / leap of faith: pass a NULL here because we don't have a connection yet.
         * i reviewed all the built-in prpls and a bunch of third-party ones and none
         * of them seem to need this parameter at all, so... i hope it never crashes */
        info = pi->chat_info(NULL);

        for (l = info; l; l = l->next) {
                struct proto_chat_entry *pce = l->data;
                char *key;

                if (strcmp(pce->identifier, "handle") == 0 ||
                    strcmp(pce->identifier, "password") == 0 ||
                    strcmp(pce->identifier, "passwd") == 0) {
                        /* skip these, they are handled above */
                        g_free(pce);
                        continue;
                }

                key = g_strdup_printf("purple_%s", pce->identifier);
                str_reject_chars(key, " -", '_');

                if (add) {
                        set_add(head, key, NULL, NULL, NULL);
                } else {
                        set_del(head, key);
                }

                g_free(key);
                g_free(pce);
        }

        g_list_free(NULL);
        g_list_free(info);
}

static void purple_chat_add_settings(account_t *acc, set_t **head)
{
        purple_chat_update_settings(acc, head, TRUE);
}

static void purple_chat_free_settings(account_t *acc, set_t **head)
{
        purple_chat_update_settings(acc, head, FALSE);
}

void purple_transfer_request(struct im_connection *ic, file_transfer_t *ft, char *handle);

static void purple_ui_init();

GHashTable *prplcb_ui_info()
{
        static GHashTable *ret;

        if (ret == NULL) {
                ret = g_hash_table_new(g_str_hash, g_str_equal);
                g_hash_table_insert(ret, "name", "BitlBee");
                g_hash_table_insert(ret, "version", BITLBEE_VERSION);
        }

        return ret;
}

static PurpleCoreUiOps bee_core_uiops =
{
        NULL,                      /* ui_prefs_init */
        NULL,                      /* debug_ui_init */
        purple_ui_init,            /* ui_init */
        NULL,                      /* quit */
        prplcb_ui_info,            /* get_ui_info */
};

static void prplcb_conn_progress(PurpleConnection *gc, const char *text, size_t step, size_t step_count)
{
        struct im_connection *ic = purple_ic_by_gc(gc);

        imcb_log(ic, "%s", text);
}

static void prplcb_conn_connected(PurpleConnection *gc)
{
        struct im_connection *ic = purple_ic_by_gc(gc);
        struct purple_data *pd = ic->proto_data;
        const char *dn, *token;
        set_t *s;

        imcb_connected(ic);

        if ((dn = purple_connection_get_display_name(gc)) &&
            (s = set_find(&ic->acc->set, "display_name"))) {
                g_free(s->value);
                s->value = g_strdup(dn);
        }

        // user list needs to be requested for Gadu-Gadu
        purple_gg_buddylist_import(gc);

        /* more awful hacks, because clearly we didn't have enough of those */
        if ((s = set_find(&ic->acc->set, "line-auth-token")) &&
            (token = purple_account_get_string(pd->account, "line-auth-token", NULL))) {
                g_free(s->value);
                s->value = g_strdup(token);
        }

        ic->flags |= OPT_DOES_HTML;
}

static void prplcb_conn_disconnected(PurpleConnection *gc)
{
        struct im_connection *ic = purple_ic_by_gc(gc);

        if (ic != NULL) {
                imc_logout(ic, !gc->wants_to_die);
        }
}

static void prplcb_conn_notice(PurpleConnection *gc, const char *text)
{
        struct im_connection *ic = purple_ic_by_gc(gc);

        if (ic != NULL) {
                imcb_log(ic, "%s", text);
        }
}

static void prplcb_conn_report_disconnect_reason(PurpleConnection *gc, PurpleConnectionError reason, const char *text)
{
        struct im_connection *ic = purple_ic_by_gc(gc);

        /* PURPLE_CONNECTION_ERROR_NAME_IN_USE means concurrent login,
           should probably handle that. */
        if (ic != NULL) {
                imcb_error(ic, "%s", text);
        }
}

static PurpleConnectionUiOps bee_conn_uiops =
{
        prplcb_conn_progress,                    /* connect_progress */
        prplcb_conn_connected,                   /* connected */
        prplcb_conn_disconnected,                /* disconnected */
        prplcb_conn_notice,                      /* notice */
        NULL,                                    /* report_disconnect */
        NULL,                                    /* network_connected */
        NULL,                                    /* network_disconnected */
        prplcb_conn_report_disconnect_reason,    /* report_disconnect_reason */
};

static void prplcb_blist_update(PurpleBuddyList *list, PurpleBlistNode *node)
{
        if (node->type == PURPLE_BLIST_BUDDY_NODE) {
                PurpleBuddy *bud = (PurpleBuddy *) node;
                PurpleGroup *group = purple_buddy_get_group(bud);
                struct im_connection *ic = purple_ic_by_pa(bud->account);
                struct purple_data *pd = ic->proto_data;
                PurpleStatus *as;
                int flags = 0;
                char *alias = NULL;

                if (ic == NULL) {
                        return;
                }

                alias = bud->server_alias ? : bud->alias;

                if (alias) {
                        imcb_rename_buddy(ic, bud->name, alias);
                        if (pd->flags & PURPLE_OPT_SHOULD_SET_NICK) {
                                imcb_buddy_nick_change(ic, bud->name, alias);
                        }
                }

                if (group) {
                        imcb_add_buddy(ic, bud->name, purple_group_get_name(group));
                }

                flags |= purple_presence_is_online(bud->presence) ? OPT_LOGGED_IN : 0;
                flags |= purple_presence_is_available(bud->presence) ? 0 : OPT_AWAY;

                as = purple_presence_get_active_status(bud->presence);

                imcb_buddy_status(ic, bud->name, flags, purple_status_get_name(as),
                                  purple_status_get_attr_string(as, "message"));

                imcb_buddy_times(ic, bud->name,
                                 purple_presence_get_login_time(bud->presence),
                                 purple_presence_get_idle_time(bud->presence));
        }
}

static void prplcb_blist_new(PurpleBlistNode *node)
{
        if (node->type == PURPLE_BLIST_BUDDY_NODE) {
                PurpleBuddy *bud = (PurpleBuddy *) node;
                struct im_connection *ic = purple_ic_by_pa(bud->account);

                if (ic == NULL) {
                        return;
                }

                imcb_add_buddy(ic, bud->name, NULL);

                prplcb_blist_update(NULL, node);
        }
}

static void prplcb_blist_remove(PurpleBuddyList *list, PurpleBlistNode *node)
{
/*
        PurpleBuddy *bud = (PurpleBuddy*) node;

        if( node->type == PURPLE_BLIST_BUDDY_NODE )
        {
                struct im_connection *ic = purple_ic_by_pa( bud->account );

                if( ic == NULL )
                        return;

                imcb_remove_buddy( ic, bud->name, NULL );
        }
*/
}

static PurpleBlistUiOps bee_blist_uiops =
{
        NULL,                      /* new_list */
        prplcb_blist_new,          /* new_node */
        NULL,                      /* show */
        prplcb_blist_update,       /* update */
        prplcb_blist_remove,       /* remove */
};

void prplcb_conv_new(PurpleConversation *conv)
{
        if (conv->type == PURPLE_CONV_TYPE_CHAT) {
                struct im_connection *ic = purple_ic_by_pa(conv->account);
                struct groupchat *gc;

                gc = bee_chat_by_title(ic->bee, ic, conv->name);

                if (!gc) {
                        gc = imcb_chat_new(ic, conv->name);
                        if (conv->title != NULL) {
                                imcb_chat_name_hint(gc, conv->title);
                        }
                }

                /* don't set the topic if it's just the name */
                if (conv->title != NULL && strcmp(conv->name, conv->title) != 0) {
                        imcb_chat_topic(gc, NULL, conv->title, 0);
                }

                conv->ui_data = gc;
                gc->data = conv;

                /* libpurple brokenness: Whatever. Show that we join right away,
                   there's no clear "This is you!" signaling in _add_users so
                   don't even try. */
                imcb_chat_add_buddy(gc, gc->ic->acc->user);
        }
}

void prplcb_conv_free(PurpleConversation *conv)
{
        struct groupchat *gc = conv->ui_data;

        imcb_chat_free(gc);
}

void prplcb_conv_add_users(PurpleConversation *conv, GList *cbuddies, gboolean new_arrivals)
{
        struct groupchat *gc = conv->ui_data;
        GList *b;

        for (b = cbuddies; b; b = b->next) {
                PurpleConvChatBuddy *pcb = b->data;

                imcb_chat_add_buddy(gc, pcb->name);
        }
}

void prplcb_conv_del_users(PurpleConversation *conv, GList *cbuddies)
{
        struct groupchat *gc = conv->ui_data;
        GList *b;

        for (b = cbuddies; b; b = b->next) {
                imcb_chat_remove_buddy(gc, b->data, "");
        }
}

/* Generic handler for IM or chat messages, covers write_chat, write_im and write_conv */
static void handle_conv_msg(PurpleConversation *conv, const char *who, const char *message_, guint32 bee_flags, time_t mtime)
{
        struct im_connection *ic = purple_ic_by_pa(conv->account);
        struct groupchat *gc = conv->ui_data;
        char *message = g_strdup(message_);
        PurpleBuddy *buddy;

        buddy = purple_find_buddy(conv->account, who);
        if (buddy != NULL) {
                who = purple_buddy_get_name(buddy);
        }

        if (conv->type == PURPLE_CONV_TYPE_IM) {
                imcb_buddy_msg(ic, who, message, bee_flags, mtime);
        } else if (gc) {
                imcb_chat_msg(gc, who, message, bee_flags, mtime);
        }

        g_free(message);
}

/* Handles write_im and write_chat. Removes echoes of locally sent messages.
 *
 * PURPLE_MESSAGE_DELAYED is used for chat backlogs - if a message has both
 * that flag and _SEND, it's a self-message from before joining the channel.
 * Those are safe to display. The rest (with just _SEND) may be echoes. */
static void prplcb_conv_msg(PurpleConversation *conv, const char *who, const char *message, PurpleMessageFlags flags, time_t mtime)
{
        if ((!(flags & PURPLE_MESSAGE_SEND)) ||
            (flags & PURPLE_MESSAGE_DELAYED) ||
            (flags & PURPLE_MESSAGE_REMOTE_SEND)
        ) {
                handle_conv_msg(conv, who, message, (flags & PURPLE_MESSAGE_SEND) ? OPT_SELFMESSAGE : 0, mtime);
        }
}

/* Handles write_conv. Only passes self messages from other locations through.
 * That is, only writes of PURPLE_MESSAGE_SEND.
 * There are more events which might be handled in the future, but some are tricky.
 * (images look like <img id="123">, what do i do with that?) */
static void prplcb_conv_write(PurpleConversation *conv, const char *who, const char *alias, const char *message,
                              PurpleMessageFlags flags, time_t mtime)
{
        if (flags & PURPLE_MESSAGE_SEND) {
                handle_conv_msg(conv, who, message, OPT_SELFMESSAGE, mtime);
        }
}

/* No, this is not a ui_op but a signal. */
static void prplcb_buddy_typing(PurpleAccount *account, const char *who, gpointer null)
{
        PurpleConversation *conv;
        PurpleConvIm *im;
        int state;

        if ((conv = purple_find_conversation_with_account(PURPLE_CONV_TYPE_IM, who, account)) == NULL) {
                return;
        }

        im = PURPLE_CONV_IM(conv);
        switch (purple_conv_im_get_typing_state(im)) {
        case PURPLE_TYPING:
                state = OPT_TYPING;
                break;
        case PURPLE_TYPED:
                state = OPT_THINKING;
                break;
        default:
                state = 0;
        }

        imcb_buddy_typing(purple_ic_by_pa(account), who, state);
}

static PurpleConversationUiOps bee_conv_uiops =
{
        prplcb_conv_new,           /* create_conversation  */
        prplcb_conv_free,          /* destroy_conversation */
        prplcb_conv_msg,           /* write_chat           */
        prplcb_conv_msg,           /* write_im             */
        prplcb_conv_write,         /* write_conv           */
        prplcb_conv_add_users,     /* chat_add_users       */
        NULL,                      /* chat_rename_user     */
        prplcb_conv_del_users,     /* chat_remove_users    */
        NULL,                      /* chat_update_user     */
        NULL,                      /* present              */
        NULL,                      /* has_focus            */
        NULL,                      /* custom_smiley_add    */
        NULL,                      /* custom_smiley_write  */
        NULL,                      /* custom_smiley_close  */
        NULL,                      /* send_confirm         */
};

struct prplcb_request_action_data {
        void *user_data, *bee_data;
        PurpleRequestActionCb yes, no;
        int yes_i, no_i;
};

static void prplcb_request_action_yes(void *data)
{
        struct prplcb_request_action_data *pqad = data;

        if (pqad->yes) {
                pqad->yes(pqad->user_data, pqad->yes_i);
        }
}

static void prplcb_request_action_no(void *data)
{
        struct prplcb_request_action_data *pqad = data;

        if (pqad->no) {
                pqad->no(pqad->user_data, pqad->no_i);
        }
}

/* q->free() callback from query_del()*/
static void prplcb_request_action_free(void *data)
{
        struct prplcb_request_action_data *pqad = data;

        pqad->bee_data = NULL;
        purple_request_close(PURPLE_REQUEST_ACTION, pqad);
}

static void *prplcb_request_action(const char *title, const char *primary, const char *secondary,
                                   int default_action, PurpleAccount *account, const char *who,
                                   PurpleConversation *conv, void *user_data, size_t action_count,
                                   va_list actions)
{
        struct prplcb_request_action_data *pqad;
        int i;
        char *q;

        pqad = g_new0(struct prplcb_request_action_data, 1);

        for (i = 0; i < action_count; i++) {
                char *caption;
                void *fn;

                caption = va_arg(actions, char*);
                fn = va_arg(actions, void*);

                if (strstr(caption, "Accept") || strstr(caption, "OK")) {
                        pqad->yes = fn;
                        pqad->yes_i = i;
                } else if (strstr(caption, "Reject") || strstr(caption, "Cancel")) {
                        pqad->no = fn;
                        pqad->no_i = i;
                }
        }

        pqad->user_data = user_data;

        /* TODO: IRC stuff here :-( */
        q = g_strdup_printf("Request: %s\n\n%s\n\n%s", title, primary, secondary);
        pqad->bee_data = query_add(local_bee->ui_data, purple_ic_by_pa(account), q,
                                   prplcb_request_action_yes, prplcb_request_action_no,
                                   prplcb_request_action_free, pqad);

        g_free(q);

        return pqad;
}

/* So it turns out some requests have no account context at all, because
 * libpurple hates us. This means that query_del_by_conn() won't remove those
 * on logout, and will segfault if the user replies. That's why this exists.
 */
static void prplcb_close_request(PurpleRequestType type, void *data)
{
        struct prplcb_request_action_data *pqad;
        struct request_input_data *ri;
        struct purple_data *pd;

        if (!data) {
                return;
        }

        switch (type) {
        case PURPLE_REQUEST_ACTION:
                pqad = data;
                /* if this is null, it's because query_del was run already */
                if (pqad->bee_data) {
                        query_del(local_bee->ui_data, pqad->bee_data);
                }
                g_free(pqad);
                break;
        case PURPLE_REQUEST_INPUT:
                ri = data;
                pd = ri->ic->proto_data;
                imcb_remove_buddy(ri->ic, ri->buddy, NULL);
                g_free(ri->buddy);
                g_hash_table_remove(pd->input_requests, GUINT_TO_POINTER(ri->id));
                break;
        default:
                g_free(data);
                break;
        }

}

void* prplcb_request_input(const char *title, const char *primary,
        const char *secondary, const char *default_value, gboolean multiline,
        gboolean masked, gchar *hint, const char *ok_text, GCallback ok_cb,
        const char *cancel_text, GCallback cancel_cb, PurpleAccount *account,
        const char *who, PurpleConversation *conv, void *user_data)
{
        struct im_connection *ic = purple_ic_by_pa(account);
        struct purple_data *pd = ic->proto_data;
        struct request_input_data *ri;
        guint id;

        /* hack so that jabber's chat list doesn't ask for conference server twice */
        if (pd->chat_list_server && title && g_strcmp0(title, "Enter a Conference Server") == 0) {
                ((ri_callback_t) ok_cb)(user_data, pd->chat_list_server);
                g_free(pd->chat_list_server);
                pd->chat_list_server = NULL;
                return NULL;
        }

        id = pd->next_request_id++;
        ri = g_new0(struct request_input_data, 1);

        ri->id = id;
        ri->ic = ic;
        ri->buddy = g_strdup_printf("%s_%u", PURPLE_REQUEST_HANDLE, id);
        ri->data_callback = (ri_callback_t) ok_cb;
        ri->user_data = user_data;
        g_hash_table_insert(pd->input_requests, GUINT_TO_POINTER(id), ri);

        imcb_add_buddy(ic, ri->buddy, NULL);

        if (title && *title) {
                imcb_buddy_msg(ic, ri->buddy, title, 0, 0);
        }

        if (primary && *primary) {
                imcb_buddy_msg(ic, ri->buddy, primary, 0, 0);
        }

        if (secondary && *secondary) {
                imcb_buddy_msg(ic, ri->buddy, secondary, 0, 0);
        }

        return ri;
}

void purple_request_input_callback(guint id, struct im_connection *ic,
                                   const char *message, const char *who)
{
        struct purple_data *pd = ic->proto_data;
        struct request_input_data *ri;

        if (!(ri = g_hash_table_lookup(pd->input_requests, GUINT_TO_POINTER(id)))) {
                return;
        }

        ri->data_callback(ri->user_data, message);

        purple_request_close(PURPLE_REQUEST_INPUT, ri);
}


static PurpleRequestUiOps bee_request_uiops =
{
        prplcb_request_input,      /* request_input */
        NULL,                      /* request_choice */
        prplcb_request_action,     /* request_action */
        NULL,                      /* request_fields */
        NULL,                      /* request_file */
        prplcb_close_request,      /* close_request */
        NULL,                      /* request_folder */
};

static void prplcb_privacy_permit_added(PurpleAccount *account, const char *name)
{
        struct im_connection *ic = purple_ic_by_pa(account);

        if (!g_slist_find_custom(ic->permit, name, (GCompareFunc) ic->acc->prpl->handle_cmp)) {
                ic->permit = g_slist_prepend(ic->permit, g_strdup(name));
        }
}

static void prplcb_privacy_permit_removed(PurpleAccount *account, const char *name)
{
        struct im_connection *ic = purple_ic_by_pa(account);
        void *n;

        n = g_slist_find_custom(ic->permit, name, (GCompareFunc) ic->acc->prpl->handle_cmp);
        ic->permit = g_slist_remove(ic->permit, n);
}

static void prplcb_privacy_deny_added(PurpleAccount *account, const char *name)
{
        struct im_connection *ic = purple_ic_by_pa(account);

        if (!g_slist_find_custom(ic->deny, name, (GCompareFunc) ic->acc->prpl->handle_cmp)) {
                ic->deny = g_slist_prepend(ic->deny, g_strdup(name));
        }
}

static void prplcb_privacy_deny_removed(PurpleAccount *account, const char *name)
{
        struct im_connection *ic = purple_ic_by_pa(account);
        void *n;

        n = g_slist_find_custom(ic->deny, name, (GCompareFunc) ic->acc->prpl->handle_cmp);
        ic->deny = g_slist_remove(ic->deny, n);
}

static PurplePrivacyUiOps bee_privacy_uiops =
{
        prplcb_privacy_permit_added,       /* permit_added */
        prplcb_privacy_permit_removed,     /* permit_removed */
        prplcb_privacy_deny_added,         /* deny_added */
        prplcb_privacy_deny_removed,       /* deny_removed */
};

static void prplcb_roomlist_create(PurpleRoomlist *list)
{
        struct purple_roomlist_data *rld;

        list->ui_data = rld = g_new0(struct purple_roomlist_data, 1);
        rld->topic = -1;
}

static void prplcb_roomlist_set_fields(PurpleRoomlist *list, GList *fields)
{
        gint topic = -1;
        GList *l;
        guint i;
        PurpleRoomlistField *field;
        struct purple_roomlist_data *rld = list->ui_data;

        for (i = 0, l = fields; l; i++, l = l->next) {
                field = l->data;

                /* Use the first visible string field as a fallback topic */
                if (i != 0 && topic < 0 && !field->hidden &&
                    field->type == PURPLE_ROOMLIST_FIELD_STRING) {
                        topic = i;
                }

                if ((g_strcasecmp(field->name, "description") == 0) ||
                    (g_strcasecmp(field->name, "topic") == 0)) {
                        if (field->type == PURPLE_ROOMLIST_FIELD_STRING) {
                                rld->topic = i;
                        }
                }
        }

        if (rld->topic < 0) {
                rld->topic = topic;
        }
}

static char *prplcb_roomlist_get_room_name(PurpleRoomlist *list, PurpleRoomlistRoom *room)
{
        struct im_connection *ic = purple_ic_by_pa(list->account);
        struct purple_data *pd = ic->proto_data;
        PurplePlugin *prpl = purple_plugins_find_with_id(pd->account->protocol_id);
        PurplePluginProtocolInfo *pi = prpl->info->extra_info;

        if (pi && pi->roomlist_room_serialize) {
                return pi->roomlist_room_serialize(room);
        } else {
                return g_strdup(purple_roomlist_room_get_name(room));
        }
}

static void prplcb_roomlist_add_room(PurpleRoomlist *list, PurpleRoomlistRoom *room)
{
        bee_chat_info_t *ci;
        char *title;
        const char *topic;
        GList *fields;
        struct purple_roomlist_data *rld = list->ui_data;

        fields = purple_roomlist_room_get_fields(room);
        title = prplcb_roomlist_get_room_name(list, room);

        if (rld->topic >= 0) {
                topic = g_list_nth_data(fields, rld->topic);
        } else {
                topic = NULL;
        }

        ci = g_new(bee_chat_info_t, 1);
        ci->title = title;
        ci->topic = g_strdup(topic);
        rld->chats = g_slist_prepend(rld->chats, ci);
}

static void prplcb_roomlist_in_progress(PurpleRoomlist *list, gboolean in_progress)
{
        struct im_connection *ic;
        struct purple_data *pd;
        struct purple_roomlist_data *rld = list->ui_data;

        if (in_progress || !rld) {
                return;
        }

        ic = purple_ic_by_pa(list->account);
        imcb_chat_list_free(ic);

        pd = ic->proto_data;
        g_free(pd->chat_list_server);
        pd->chat_list_server = NULL;

        ic->chatlist = g_slist_reverse(rld->chats);
        rld->chats = NULL;

        imcb_chat_list_finish(ic);

        if (rld->initialized) {
                purple_roomlist_unref(list);
        }
}

static void prplcb_roomlist_destroy(PurpleRoomlist *list)
{
        g_free(list->ui_data);
        list->ui_data = NULL;
}

static PurpleRoomlistUiOps bee_roomlist_uiops =
{
        NULL,                         /* show_with_account */
        prplcb_roomlist_create,       /* create */
        prplcb_roomlist_set_fields,   /* set_fields */
        prplcb_roomlist_add_room,     /* add_room */
        prplcb_roomlist_in_progress,  /* in_progress */
        prplcb_roomlist_destroy,      /* destroy */
};

static void prplcb_debug_print(PurpleDebugLevel level, const char *category, const char *arg_s)
{
        fprintf(stderr, "DEBUG %s: %s", category, arg_s);
}

static PurpleDebugUiOps bee_debug_uiops =
{
        prplcb_debug_print,        /* print */
};

static guint prplcb_ev_timeout_add(guint interval, GSourceFunc func, gpointer udata)
{
        return b_timeout_add(interval, (b_event_handler) func, udata);
}

static guint prplcb_ev_input_add(int fd, PurpleInputCondition cond, PurpleInputFunction func, gpointer udata)
{
        return b_input_add(fd, cond | B_EV_FLAG_FORCE_REPEAT, (b_event_handler) func, udata);
}

static gboolean prplcb_ev_remove(guint id)
{
        b_event_remove((gint) id);
        return TRUE;
}

static PurpleEventLoopUiOps glib_eventloops =
{
        prplcb_ev_timeout_add,     /* timeout_add */
        prplcb_ev_remove,          /* timeout_remove */
        prplcb_ev_input_add,       /* input_add */
        prplcb_ev_remove,          /* input_remove */
};

/* Absolutely no connection context at all. Thanks purple! brb crying */
static void *prplcb_notify_message(PurpleNotifyMsgType type, const char *title,
                                   const char *primary, const char *secondary)
{
        char *text = g_strdup_printf("%s%s - %s%s%s",
                (type == PURPLE_NOTIFY_MSG_ERROR) ? "Error: " : "",
                title,
                primary ?: "",
                (primary && secondary) ? " - " : "",
                secondary ?: ""
        );

        if (local_bee->ui->log) {
                local_bee->ui->log(local_bee, "purple", text);
        }

        g_free(text);

        return NULL;
}

static void *prplcb_notify_email(PurpleConnection *gc, const char *subject, const char *from,
                                 const char *to, const char *url)
{
        struct im_connection *ic = purple_ic_by_gc(gc);

        imcb_notify_email(ic, "Received e-mail from %s for %s: %s <%s>", from, to, subject, url);

        return NULL;
}

static void *prplcb_notify_userinfo(PurpleConnection *gc, const char *who, PurpleNotifyUserInfo *user_info)
{
        struct im_connection *ic = purple_ic_by_gc(gc);
        GString *info = g_string_new("");
        GList *l = purple_notify_user_info_get_entries(user_info);
        char *key;
        const char *value;
        int n;

        while (l) {
                PurpleNotifyUserInfoEntry *e = l->data;

                switch (purple_notify_user_info_entry_get_type(e)) {
                case PURPLE_NOTIFY_USER_INFO_ENTRY_PAIR:
                case PURPLE_NOTIFY_USER_INFO_ENTRY_SECTION_HEADER:
                        key = g_strdup(purple_notify_user_info_entry_get_label(e));
                        value = purple_notify_user_info_entry_get_value(e);

                        if (key) {
                                strip_html(key);
                                g_string_append_printf(info, "%s: ", key);

                                if (value) {
                                        n = strlen(value) - 1;
                                        while (g_ascii_isspace(value[n])) {
                                                n--;
                                        }
                                        g_string_append_len(info, value, n + 1);
                                }
                                g_string_append_c(info, '\n');
                                g_free(key);
                        }

                        break;
                case PURPLE_NOTIFY_USER_INFO_ENTRY_SECTION_BREAK:
                        g_string_append(info, "------------------------\n");
                        break;
                }

                l = l->next;
        }

        imcb_log(ic, "User %s info:\n%s", who, info->str);
        g_string_free(info, TRUE);

        return NULL;
}

static PurpleNotifyUiOps bee_notify_uiops =
{
        prplcb_notify_message,     /* notify_message */
        prplcb_notify_email,       /* notify_email */
        NULL,                      /* notify_emails */
        NULL,                      /* notify_formatted */
        NULL,                      /* notify_searchresults */
        NULL,                      /* notify_searchresults_new_rows */
        prplcb_notify_userinfo,    /* notify_userinfo */
};

static void *prplcb_account_request_authorize(PurpleAccount *account, const char *remote_user,
                                              const char *id, const char *alias, const char *message, gboolean on_list,
                                              PurpleAccountRequestAuthorizationCb authorize_cb,
                                              PurpleAccountRequestAuthorizationCb deny_cb, void *user_data)
{
        struct im_connection *ic = purple_ic_by_pa(account);
        char *q;

        if (alias) {
                q = g_strdup_printf("%s (%s) wants to add you to his/her contact "
                                    "list. (%s)", alias, remote_user, message);
        } else {
                q = g_strdup_printf("%s wants to add you to his/her contact "
                                    "list. (%s)", remote_user, message);
        }

        imcb_ask_with_free(ic, q, user_data, authorize_cb, deny_cb, NULL);
        g_free(q);

        return NULL;
}

static PurpleAccountUiOps bee_account_uiops =
{
        NULL,                              /* notify_added */
        NULL,                              /* status_changed */
        NULL,                              /* request_add */
        prplcb_account_request_authorize,  /* request_authorize */
        NULL,                              /* close_account_request */
};

static void *prplcb_bitlbee_set_account_password(PurpleAccount *account, char *password)
{
        struct im_connection *ic = purple_ic_by_pa(account);

        set_setstr(&ic->acc->set, "password", password ? password : "");

        return GINT_TO_POINTER(TRUE);
}

extern PurpleXferUiOps bee_xfer_uiops;

static void purple_ui_init()
{
        purple_connections_set_ui_ops(&bee_conn_uiops);
        purple_blist_set_ui_ops(&bee_blist_uiops);
        purple_conversations_set_ui_ops(&bee_conv_uiops);
        purple_request_set_ui_ops(&bee_request_uiops);
        purple_privacy_set_ui_ops(&bee_privacy_uiops);
        purple_roomlist_set_ui_ops(&bee_roomlist_uiops);
        purple_notify_set_ui_ops(&bee_notify_uiops);
        purple_accounts_set_ui_ops(&bee_account_uiops);
        purple_xfers_set_ui_ops(&bee_xfer_uiops);

        if (getenv("BITLBEE_DEBUG")) {
                purple_debug_set_ui_ops(&bee_debug_uiops);
        }
}

/* borrowing this semi-private function
 * TODO: figure out a better interface later (famous last words) */
gboolean plugin_info_add(struct plugin_info *info);

void purple_initmodule()
{
        struct prpl funcs;
        GList *prots;
        GString *help;
        char *dir;
        gboolean debug_enabled = !!getenv("BITLBEE_DEBUG");

        if (purple_get_core() != NULL) {
                log_message(LOGLVL_ERROR, "libpurple already initialized. "
                            "Please use inetd or ForkDaemon mode instead.");
                return;
        }

        g_return_if_fail((int) B_EV_IO_READ == (int) PURPLE_INPUT_READ);
        g_return_if_fail((int) B_EV_IO_WRITE == (int) PURPLE_INPUT_WRITE);

        dir = g_strdup_printf("%s/purple", global.conf->configdir);
        purple_util_set_user_dir(dir);
        g_free(dir);

        dir = g_strdup_printf("%s/purple", global.conf->plugindir);
        purple_plugins_add_search_path(dir);
        g_free(dir);

        purple_debug_set_enabled(debug_enabled);
        purple_core_set_ui_ops(&bee_core_uiops);
        purple_eventloop_set_ui_ops(&glib_eventloops);
        if (!purple_core_init("BitlBee")) {
                /* Initializing the core failed. Terminate. */
                fprintf(stderr, "libpurple initialization failed.\n");
                abort();
        }
        purple_debug_set_enabled(FALSE);

        if (proxytype != PROXY_NONE) {
                PurpleProxyInfo *pi = purple_global_proxy_get_info();
                switch (proxytype) {
                case PROXY_SOCKS4A:
                case PROXY_SOCKS4:
                        purple_proxy_info_set_type(pi, PURPLE_PROXY_SOCKS4);
                        break;
                case PROXY_SOCKS5:
                        purple_proxy_info_set_type(pi, PURPLE_PROXY_SOCKS5);
                        break;
                case PROXY_HTTP:
                        purple_proxy_info_set_type(pi, PURPLE_PROXY_HTTP);
                        break;
                }
                purple_proxy_info_set_host(pi, proxyhost);
                purple_proxy_info_set_port(pi, proxyport);
                purple_proxy_info_set_username(pi, proxyuser);
                purple_proxy_info_set_password(pi, proxypass);
        }

        purple_set_blist(purple_blist_new());

        /* No, really. So far there were ui_ops for everything, but now suddenly
           one needs to use signals for typing notification stuff. :-( */
        purple_signal_connect(purple_conversations_get_handle(), "buddy-typing",
                              &funcs, PURPLE_CALLBACK(prplcb_buddy_typing), NULL);
        purple_signal_connect(purple_conversations_get_handle(), "buddy-typed",
                              &funcs, PURPLE_CALLBACK(prplcb_buddy_typing), NULL);
        purple_signal_connect(purple_conversations_get_handle(), "buddy-typing-stopped",
                              &funcs, PURPLE_CALLBACK(prplcb_buddy_typing), NULL);

        /* "bitlbee-set-account-password" signal:
         * Replacement API for purple_account_set_password() to be called by
         * prpls that wish to store updated passwords or oauth tokens, since
         * our password storage doesn't get notified of calls to
         * purple_account_set_password().
         *
         * When used with purple_signal_emit_return_1() returns:
         *  - GINT_TO_POINTER(TRUE) if implemented by this version of bitlbee
         *  - NULL otherwise.
         *
         * Originally made for the hangouts plugin.
         */

        purple_signal_register(purple_accounts_get_handle(), "bitlbee-set-account-password",
                               purple_marshal_POINTER__POINTER_POINTER,
                               purple_value_new(PURPLE_TYPE_BOOLEAN), 2,
                               purple_value_new(PURPLE_TYPE_SUBTYPE, PURPLE_SUBTYPE_ACCOUNT),
                               purple_value_new(PURPLE_TYPE_STRING));

        purple_signal_connect(purple_accounts_get_handle(), "bitlbee-set-account-password",
                              &funcs, PURPLE_CALLBACK(prplcb_bitlbee_set_account_password), NULL);

        memset(&funcs, 0, sizeof(funcs));
        funcs.login = purple_login;
        funcs.init = purple_init;
        funcs.logout = purple_logout;
        funcs.buddy_msg = purple_buddy_msg;
        funcs.away_states = purple_away_states;
        funcs.set_away = purple_set_away;
        funcs.add_buddy = purple_add_buddy;
        funcs.remove_buddy = purple_remove_buddy;
        funcs.add_permit = purple_add_permit;
        funcs.add_deny = purple_add_deny;
        funcs.rem_permit = purple_rem_permit;
        funcs.rem_deny = purple_rem_deny;
        funcs.get_info = purple_get_info;
        funcs.keepalive = purple_keepalive;
        funcs.send_typing = purple_send_typing;
        funcs.handle_cmp = g_strcasecmp;
        /* TODO(wilmer): Set these only for protocols that support them? */
        funcs.chat_msg = purple_chat_msg;
        funcs.chat_with = purple_chat_with;
        funcs.chat_invite = purple_chat_invite;
        funcs.chat_topic = purple_chat_set_topic;
        funcs.chat_kick = purple_chat_kick;
        funcs.chat_leave = purple_chat_leave;
        funcs.chat_join = purple_chat_join;
        funcs.chat_list = purple_chat_list;
        funcs.chat_add_settings = purple_chat_add_settings;
        funcs.chat_free_settings = purple_chat_free_settings;
        funcs.transfer_request = purple_transfer_request;

        help = g_string_new("BitlBee libpurple module supports the following IM protocols:\n");

        /* Add a protocol entry to BitlBee's structures for every protocol
           supported by this libpurple instance. */
        for (prots = purple_plugins_get_protocols(); prots; prots = prots->next) {
                PurplePlugin *prot = prots->data;
                PurplePluginProtocolInfo *pi = prot->info->extra_info;
                struct prpl *ret;
                struct plugin_info *info;

                /* If we already have this one (as a native module), don't
                   add a libpurple duplicate. */
                if (find_protocol(prot->info->id)) {
                        continue;
                }

                ret = g_memdup(&funcs, sizeof(funcs));
                ret->name = ret->data = prot->info->id;
                if (strncmp(ret->name, "prpl-", 5) == 0) {
                        ret->name += 5;
                }

                if (pi->options & OPT_PROTO_NO_PASSWORD) {
                        ret->options |= PRPL_OPT_NO_PASSWORD;
                }

                if (pi->options & OPT_PROTO_PASSWORD_OPTIONAL) {
                        ret->options |= PRPL_OPT_PASSWORD_OPTIONAL;
                }

                register_protocol(ret);

                g_string_append_printf(help, "\n* %s (%s)", ret->name, prot->info->name);

                /* libpurple doesn't define a protocol called OSCAR, but we
                   need it to be compatible with normal BitlBee. */
                if (g_strcasecmp(prot->info->id, "prpl-aim") == 0) {
                        ret = g_memdup(&funcs, sizeof(funcs));
                        ret->name = "oscar";
                        /* purple_get_account_prpl_id() determines the actual protocol ID (icq/aim) */
                        ret->data = NULL;
                        register_protocol(ret);
                }

                info = g_new0(struct plugin_info, 1);
                info->abiver = BITLBEE_ABI_VERSION_CODE;
                info->name = ret->name;
                info->version = prot->info->version;
                info->description = prot->info->description;
                info->author = prot->info->author;
                info->url = prot->info->homepage;

                plugin_info_add(info);
        }

        g_string_append(help, "\n\nFor used protocols, more information about available "
                        "settings can be found using \x02help purple <protocol name>\x02 "
                        "(create an account using that protocol first!)");

        /* Add a simple dynamically-generated help item listing all
           the supported protocols. */
        help_add_mem(&global.help, "purple", help->str);
        g_string_free(help, TRUE);
}