yahoo.c

Linux下的多协议即时通讯程序源代码

/*
 * purple
 *
 * Purple is the legal property of its developers, whose names are too numerous
 * to list here.  Please refer to the COPYRIGHT file distributed with this
 * source distribution.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include "internal.h"

#include "account.h"
#include "accountopt.h"
#include "blist.h"
#include "cipher.h"
#include "cmds.h"
#include "core.h"
#include "debug.h"
#include "notify.h"
#include "privacy.h"
#include "prpl.h"
#include "proxy.h"
#include "request.h"
#include "server.h"
#include "util.h"
#include "version.h"

#include "yahoo.h"
#include "yahoochat.h"
#include "yahoo_auth.h"
#include "yahoo_crypt.h"
#include "yahoo_doodle.h"
#include "yahoo_filexfer.h"
#include "yahoo_friend.h"
#include "yahoo_packet.h"
#include "yahoo_picture.h"
#include "ycht.h"

/* #define YAHOO_DEBUG */

/* #define TRY_WEBMESSENGER_LOGIN 0 */

static void yahoo_add_buddy(PurpleConnection *gc, PurpleBuddy *, PurpleGroup *);
#ifdef TRY_WEBMESSENGER_LOGIN
static void yahoo_login_page_cb(PurpleUtilFetchUrlData *url_data, gpointer user_data, const gchar *url_text, size_t len, const gchar *error_message);
#endif
static void yahoo_set_status(PurpleAccount *account, PurpleStatus *status);

static void
yahoo_add_permit(PurpleConnection *gc, const char *who)
{
	purple_debug_info("yahoo",
			"Permitting ID %s local contact rights for account %s\n", who, gc->account);
	purple_privacy_permit_add(gc->account,who,TRUE);
}

static void
yahoo_rem_permit(PurpleConnection *gc, const char *who)
{
	purple_debug_info("yahoo",
			"Denying ID %s local contact rights for account %s\n", who, gc->account);
	purple_privacy_permit_remove(gc->account,who,TRUE);
}

gboolean
yahoo_privacy_check(PurpleConnection *gc, const char *who)
{
	/* returns TRUE if allowed through, FALSE otherwise */
	gboolean permitted;

	permitted = purple_privacy_check(gc->account, who);

	/* print some debug info */
	if (!permitted) {
		char *deb = NULL;
		switch (gc->account->perm_deny)
		{
			case PURPLE_PRIVACY_DENY_ALL:
				deb = "PURPLE_PRIVACY_DENY_ALL";
			break;
			case PURPLE_PRIVACY_DENY_USERS:
				deb = "PURPLE_PRIVACY_DENY_USERS";
			break;
			case PURPLE_PRIVACY_ALLOW_BUDDYLIST:
				deb = "PURPLE_PRIVACY_ALLOW_BUDDYLIST";
			break;
		}
		if(deb)
			purple_debug_info("yahoo",
				"%s blocked data received from %s (%s)\n",
				gc->account->username,who, deb);
	} else if (gc->account->perm_deny == PURPLE_PRIVACY_ALLOW_USERS) {
		purple_debug_info("yahoo",
			"%s allowed data received from %s (PURPLE_PRIVACY_ALLOW_USERS)\n",
			gc->account->username,who);
	}

	return permitted;
}

static void yahoo_update_status(PurpleConnection *gc, const char *name, YahooFriend *f)
{
	char *status = NULL;

	if (!gc || !name || !f || !purple_find_buddy(purple_connection_get_account(gc), name))
		return;

	if (f->status == YAHOO_STATUS_OFFLINE)
	{
		return;
	}

	switch (f->status) {
	case YAHOO_STATUS_AVAILABLE:
		status = YAHOO_STATUS_TYPE_AVAILABLE;
		break;
	case YAHOO_STATUS_BRB:
		status = YAHOO_STATUS_TYPE_BRB;
		break;
	case YAHOO_STATUS_BUSY:
		status = YAHOO_STATUS_TYPE_BUSY;
		break;
	case YAHOO_STATUS_NOTATHOME:
		status = YAHOO_STATUS_TYPE_NOTATHOME;
		break;
	case YAHOO_STATUS_NOTATDESK:
		status = YAHOO_STATUS_TYPE_NOTATDESK;
		break;
	case YAHOO_STATUS_NOTINOFFICE:
		status = YAHOO_STATUS_TYPE_NOTINOFFICE;
		break;
	case YAHOO_STATUS_ONPHONE:
		status = YAHOO_STATUS_TYPE_ONPHONE;
		break;
	case YAHOO_STATUS_ONVACATION:
		status = YAHOO_STATUS_TYPE_ONVACATION;
		break;
	case YAHOO_STATUS_OUTTOLUNCH:
		status = YAHOO_STATUS_TYPE_OUTTOLUNCH;
		break;
	case YAHOO_STATUS_STEPPEDOUT:
		status = YAHOO_STATUS_TYPE_STEPPEDOUT;
		break;
	case YAHOO_STATUS_INVISIBLE: /* this should never happen? */
		status = YAHOO_STATUS_TYPE_INVISIBLE;
		break;
	case YAHOO_STATUS_CUSTOM:
	case YAHOO_STATUS_IDLE:
		if (!f->away)
			status = YAHOO_STATUS_TYPE_AVAILABLE;
		else
			status = YAHOO_STATUS_TYPE_AWAY;
		break;
	default:
		purple_debug_warning("yahoo", "Warning, unknown status %d\n", f->status);
		break;
	}

	if (status) {
		if (f->status == YAHOO_STATUS_CUSTOM)
			purple_prpl_got_user_status(purple_connection_get_account(gc), name, status, "message",
			                          yahoo_friend_get_status_message(f), NULL);
		else
			purple_prpl_got_user_status(purple_connection_get_account(gc), name, status, NULL);
	}

	if (f->idle != 0)
		purple_prpl_got_user_idle(purple_connection_get_account(gc), name, TRUE, f->idle);
	else
		purple_prpl_got_user_idle(purple_connection_get_account(gc), name, FALSE, 0);

	if (f->sms)
		purple_prpl_got_user_status(purple_connection_get_account(gc), name, YAHOO_STATUS_TYPE_MOBILE, NULL);
	else
		purple_prpl_got_user_status_deactive(purple_connection_get_account(gc), name, YAHOO_STATUS_TYPE_MOBILE);
}

static void yahoo_process_status(PurpleConnection *gc, struct yahoo_packet *pkt)
{
	PurpleAccount *account = purple_connection_get_account(gc);
	struct yahoo_data *yd = gc->proto_data;
	GSList *l = pkt->hash;
	YahooFriend *f = NULL;
	char *name = NULL;

	if (pkt->service == YAHOO_SERVICE_LOGOFF && pkt->status == -1) {
		gc->wants_to_die = TRUE;
		purple_connection_error(gc, _("You have signed on from another location."));
		return;
	}

	while (l) {
		struct yahoo_pair *pair = l->data;

		switch (pair->key) {
		case 0: /* we won't actually do anything with this */
			break;
		case 1: /* we don't get the full buddy list here. */
			if (!yd->logged_in) {
				purple_connection_set_display_name(gc, pair->value);
				purple_connection_set_state(gc, PURPLE_CONNECTED);
				yd->logged_in = TRUE;
				if (yd->picture_upload_todo) {
					yahoo_buddy_icon_upload(gc, yd->picture_upload_todo);
					yd->picture_upload_todo = NULL;
				}
				yahoo_set_status(account, purple_account_get_active_status(account));

				/* this requests the list. i have a feeling that this is very evil
				 *
				 * scs.yahoo.com sends you the list before this packet without  it being
				 * requested
				 *
				 * do_import(gc, NULL);
				 * newpkt = yahoo_packet_new(YAHOO_SERVICE_LIST, YAHOO_STATUS_OFFLINE, 0);
				 * yahoo_packet_send_and_free(newpkt, yd);
				 */

				}
			break;
		case 8: /* how many online buddies we have */
			break;
		case 7: /* the current buddy */
			if (name && f) /* update the previous buddy before changing the variables */
				yahoo_update_status(gc, name, f);
			name = pair->value;
			if (name && g_utf8_validate(name, -1, NULL))
				f = yahoo_friend_find_or_new(gc, name);
			else {
				f = NULL;
				name = NULL;
			}
			break;
		case 10: /* state */
			if (!f)
				break;

			f->status = strtol(pair->value, NULL, 10);
			if ((f->status >= YAHOO_STATUS_BRB) && (f->status <= YAHOO_STATUS_STEPPEDOUT))
				f->away = 1;
			else
				f->away = 0;

			if (f->status == YAHOO_STATUS_IDLE) {
				/* Idle may have already been set in a more precise way in case 137 */
				if (f->idle == 0)
					f->idle = time(NULL);
			} else
				f->idle = 0;

			if (f->status != YAHOO_STATUS_CUSTOM)
				yahoo_friend_set_status_message(f, NULL);

			f->sms = 0;
			break;
		case 19: /* custom message */
			if (f)
				yahoo_friend_set_status_message(f, yahoo_string_decode(gc, pair->value, FALSE));
			break;
		case 11: /* this is the buddy's session id */
			break;
		case 17: /* in chat? */
			break;
		case 47: /* is custom status away or not? 2=idle*/
			if (!f)
				break;

			/* I have no idea what it means when this is
			 * set when someone's available, but it doesn't
			 * mean idle. */
			if (f->status == YAHOO_STATUS_AVAILABLE)
				break;

			f->away = strtol(pair->value, NULL, 10);
			if (f->away == 2) {
				/* Idle may have already been set in a more precise way in case 137 */
				if (f->idle == 0)
					f->idle = time(NULL);
			}

			break;
		case 138: /* either we're not idle, or we are but won't say how long */
			if (!f)
				break;

			if (f->idle)
				f->idle = -1;
			break;
		case 137: /* usually idle time in seconds, sometimes login time */
			if (!f)
				break;

			if (f->status != YAHOO_STATUS_AVAILABLE)
				f->idle = time(NULL) - strtol(pair->value, NULL, 10);
			break;
		case 13: /* bitmask, bit 0 = pager, bit 1 = chat, bit 2 = game */
			if (strtol(pair->value, NULL, 10) == 0) {
				if (f)
					f->status = YAHOO_STATUS_OFFLINE;
				if (name) {
					purple_prpl_got_user_status(account, name, "offline", NULL);
			                purple_prpl_got_user_status_deactive(account, name, YAHOO_STATUS_TYPE_MOBILE);
				}
				break;
			}
			break;
		case 60: /* SMS */
			if (f) {
				f->sms = strtol(pair->value, NULL, 10);
				yahoo_update_status(gc, name, f);
			}
			break;
		case 197: /* Avatars */
		{
			guchar *decoded;
			char *tmp;
			gsize len;

			if (pair->value) {
				decoded = purple_base64_decode(pair->value, &len);
				if (len) {
					tmp = purple_str_binary_to_ascii(decoded, len);
					purple_debug_info("yahoo", "Got key 197, value = %s\n", tmp);
					g_free(tmp);
				}
				g_free(decoded);
			}
			break;
		}
		case 192: /* Pictures, aka Buddy Icons, checksum */
		{
			/* FIXME: Please, if you know this protocol,
			 * FIXME: fix up the strtol() stuff if possible. */
			int cksum = strtol(pair->value, NULL, 10);
			const char *locksum = NULL;
			PurpleBuddy *b;

			if (!name)
				break;

			b = purple_find_buddy(gc->account, name);

			if (!cksum || (cksum == -1)) {
				if (f)
					yahoo_friend_set_buddy_icon_need_request(f, TRUE);
				purple_buddy_icons_set_for_user(gc->account, name, NULL, 0, NULL);
				break;
			}

			if (!f)
				break;

			yahoo_friend_set_buddy_icon_need_request(f, FALSE);
			if (b) {
				locksum = purple_buddy_icons_get_checksum_for_user(b);
				if (!locksum || (cksum != strtol(locksum, NULL, 10)))
					yahoo_send_picture_request(gc, name);
			}

			break;
		}
		case 16: /* Custom error message */
			{
				char *tmp = yahoo_string_decode(gc, pair->value, TRUE);
				purple_notify_error(gc, NULL, tmp, NULL);
				g_free(tmp);
			}
			break;
		default:
			purple_debug(PURPLE_DEBUG_ERROR, "yahoo",
					   "Unknown status key %d\n", pair->key);
			break;
		}

		l = l->next;
	}

	if (name && f) /* update the last buddy */
		yahoo_update_status(gc, name, f);
}

static void yahoo_do_group_check(PurpleAccount *account, GHashTable *ht, const char *name, const char *group)
{
	PurpleBuddy *b;
	PurpleGroup *g;
	GSList *list, *i;
	gboolean onlist = 0;
	char *oname = NULL;
	char **oname_p = &oname;
	GSList **list_p = &list;

	if (!g_hash_table_lookup_extended(ht, purple_normalize(account, name), (gpointer *) oname_p, (gpointer *) list_p))
		list = purple_find_buddies(account, name);
	else
		g_hash_table_steal(ht, name);

	for (i = list; i; i = i->next) {
		b = i->data;
		g = purple_buddy_get_group(b);
		if (!purple_utf8_strcasecmp(group, g->name)) {
			purple_debug(PURPLE_DEBUG_MISC, "yahoo",
				"Oh good, %s is in the right group (%s).\n", name, group);
			list = g_slist_delete_link(list, i);
			onlist = 1;
			break;
		}
	}

	if (!onlist) {
		purple_debug(PURPLE_DEBUG_MISC, "yahoo",
			"Uhoh, %s isn't on the list (or not in this group), adding him to group %s.\n", name, group);
		if (!(g = purple_find_group(group))) {
			g = purple_group_new(group);
			purple_blist_add_group(g, NULL);
		}
		b = purple_buddy_new(account, name, NULL);
		purple_blist_add_buddy(b, NULL, g, NULL);
	}

	if (list) {
		if (!oname)
			oname = g_strdup(purple_normalize(account, name));
		g_hash_table_insert(ht, oname, list);
	} else if (oname)
		g_free(oname);
}

static void yahoo_do_group_cleanup(gpointer key, gpointer value, gpointer user_data)
{
	char *name = key;
	GSList *list = value, *i;
	PurpleBuddy *b;
	PurpleGroup *g;

	for (i = list; i; i = i->next) {
		b = i->data;
		g = purple_buddy_get_group(b);
		purple_debug(PURPLE_DEBUG_MISC, "yahoo", "Deleting Buddy %s from group %s.\n", name, g->name);
		purple_blist_remove_buddy(b);
	}
}

static char *_getcookie(char *rawcookie)
{
	char *cookie = NULL;
	char *tmpcookie;
	char *cookieend;

	if (strlen(rawcookie) < 2)
		return NULL;
	tmpcookie = g_strdup(rawcookie+2);
	cookieend = strchr(tmpcookie, ';');

	if (cookieend)
		*cookieend = '\0';

	cookie = g_strdup(tmpcookie);
	g_free(tmpcookie);

	return cookie;
}

static void yahoo_process_cookie(struct yahoo_data *yd, char *c)
{
	if (c[0] == 'Y') {
		if (yd->cookie_y)
			g_free(yd->cookie_y);
		yd->cookie_y = _getcookie(c);
	} else if (c[0] == 'T') {
		if (yd->cookie_t)
			g_free(yd->cookie_t);
		yd->cookie_t = _getcookie(c);
	}
}

static void yahoo_process_list_15(PurpleConnection *gc, struct yahoo_packet *pkt)
{
	GSList *l = pkt->hash;

	PurpleAccount *account = purple_connection_get_account(gc);
	GHashTable *ht;
	char *grp = NULL;
	char *norm_bud = NULL;
	YahooFriend *f = NULL; /* It's your friends. They're going to want you to share your StarBursts. */
	                       /* But what if you had no friends? */