yahoo_picture.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 "debug.h"
#include "prpl.h"
#include "proxy.h"
#include "util.h"

#include "yahoo.h"
#include "yahoo_packet.h"
#include "yahoo_friend.h"
#include "yahoo_picture.h"


struct yahoo_fetch_picture_data {
	PurpleConnection *gc;
	char *who;
	int checksum;
};

static void
yahoo_fetch_picture_cb(PurpleUtilFetchUrlData *url_data, gpointer user_data,
		const gchar *pic_data, size_t len, const gchar *error_message)
{
	struct yahoo_fetch_picture_data *d;
	struct yahoo_data *yd;

	d = user_data;
	yd = d->gc->proto_data;
	yd->url_datas = g_slist_remove(yd->url_datas, url_data);

	if (error_message != NULL) {
		purple_debug_error("yahoo", "Fetching buddy icon failed: %s\n", error_message);
	} else if (len == 0) {
		purple_debug_error("yahoo", "Fetched an icon with length 0.  Strange.\n");
	} else {
		char *checksum = g_strdup_printf("%i", d->checksum);
		purple_buddy_icons_set_for_user(purple_connection_get_account(d->gc), d->who, g_memdup(pic_data, len), len, checksum);
		g_free(checksum);
	}

	g_free(d->who);
	g_free(d);
}

void yahoo_process_picture(PurpleConnection *gc, struct yahoo_packet *pkt)
{
	struct yahoo_data *yd;
	GSList *l = pkt->hash;
	char *who = NULL, *us = NULL;
	gboolean got_icon_info = FALSE, send_icon_info = FALSE;
	char *url = NULL;
	int checksum = 0;

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

		switch (pair->key) {
		case 1:
		case 4:
			who = pair->value;
			break;
		case 5:
			us = pair->value;
			break;
		case 13: {
				int tmp;
				tmp = strtol(pair->value, NULL, 10);
				if (tmp == 1) {
					send_icon_info = TRUE;
				} else if (tmp == 2) {
					got_icon_info = TRUE;
				}
				break;
			}
		case 20:
			url = pair->value;
			break;
		case 192:
			checksum = strtol(pair->value, NULL, 10);
			break;
		}

		l = l->next;
	}

	/* Yahoo IM 6 spits out 0.png as the URL if the buddy icon is not set */
	if (who && got_icon_info && url && !strncasecmp(url, "http://", 7)) {
		/* TODO: make this work p2p, try p2p before the url */
		PurpleUtilFetchUrlData *url_data;
		struct yahoo_fetch_picture_data *data;
		PurpleBuddy *b = purple_find_buddy(gc->account, who);
		const char *locksum = NULL;

		/* FIXME: Cleanup this strtol() stuff if possible. */
		if (b && (locksum = purple_buddy_icons_get_checksum_for_user(b)) != NULL && 
				(checksum == strtol(locksum, NULL, 10)))
			return;

		data = g_new0(struct yahoo_fetch_picture_data, 1);
		data->gc = gc;
		data->who = g_strdup(who);
		data->checksum = checksum;
		url_data = purple_util_fetch_url(url, FALSE,
				"Mozilla/4.0 (compatible; MSIE 5.0)", FALSE,
				yahoo_fetch_picture_cb, data);
		if (url_data != NULL) {
			yd = gc->proto_data;
			yd->url_datas = g_slist_prepend(yd->url_datas, url_data);
		} else {
			g_free(data->who);
			g_free(data);
		}
	} else if (who && send_icon_info) {
		yahoo_send_picture_info(gc, who);
	}
}

void yahoo_process_picture_update(PurpleConnection *gc, struct yahoo_packet *pkt)
{
	GSList *l = pkt->hash;
	char *who = NULL;
	int icon = 0;

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

		switch (pair->key) {
		case 4:
			who = pair->value;
			break;
		case 5:
			/* us */
			break;
		/* NOTE: currently the server seems to only send 213; 206 was used
		 * in older versions. Check whether it's still needed. */
		case 206:
		case 213:
			icon = strtol(pair->value, NULL, 10);
			break;
		}
		l = l->next;
	}

	if (who) {
		if (icon == 2)
			yahoo_send_picture_request(gc, who);
		else if ((icon == 0) || (icon == 1)) {
			YahooFriend *f;
			purple_buddy_icons_set_for_user(gc->account, who, NULL, 0, NULL);
			if ((f = yahoo_friend_find(gc, who)))
				yahoo_friend_set_buddy_icon_need_request(f, TRUE);
			purple_debug_misc("yahoo", "Setting user %s's icon to NULL.\n", who);
		}
	}
}

void yahoo_process_picture_checksum(PurpleConnection *gc, struct yahoo_packet *pkt)
{
	GSList *l = pkt->hash;
	char *who = NULL;
	int checksum = 0;

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

		switch (pair->key) {
		case 4:
			who = pair->value;
			break;
		case 5:
			/* us */
			break;
		case 192:
			checksum = strtol(pair->value, NULL, 10);
			break;
		}
		l = l->next;
	}

	if (who) {
		PurpleBuddy *b = purple_find_buddy(gc->account, who);
		const char *locksum = NULL;

		/* FIXME: Cleanup this strtol() stuff if possible. */
		if (b) {
			locksum = purple_buddy_icons_get_checksum_for_user(b);
			if (!locksum || (checksum != strtol(locksum, NULL, 10)))
				yahoo_send_picture_request(gc, who);
		}
	}
}

void yahoo_process_picture_upload(PurpleConnection *gc, struct yahoo_packet *pkt)
{
	PurpleAccount *account = purple_connection_get_account(gc);
	struct yahoo_data *yd = gc->proto_data;
	GSList *l = pkt->hash;
	char *url = NULL;

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

		switch (pair->key) {
		case 5:
			/* us */
			break;
		case 27:
			/* filename on our computer. */
			break;
		case 20: /* url at yahoo */
			url = pair->value;
		case 38: /* timestamp */
			break;
		}
		l = l->next;
	}

	if (url) {
		if (yd->picture_url)
			g_free(yd->picture_url);
		yd->picture_url = g_strdup(url);
		purple_account_set_string(account, YAHOO_PICURL_SETTING, url);
		purple_account_set_int(account, YAHOO_PICCKSUM_SETTING, yd->picture_checksum);
		yahoo_send_picture_update(gc, 2);
		yahoo_send_picture_checksum(gc);
	}
}

void yahoo_process_avatar_update(PurpleConnection *gc, struct yahoo_packet *pkt)
{
	GSList *l = pkt->hash;
	char *who = NULL;
	int avatar = 0;

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

		switch (pair->key) {
		case 4:
			who = pair->value;
			break;
		case 5:
			/* us */
			break;
		case 206:
			/*
			 * 0 - No icon or avatar
			 * 1 - Using an avatar
			 * 2 - Using an icon
			 */
			avatar = strtol(pair->value, NULL, 10);
			break;
		}
		l = l->next;
	}

	if (who) {
		if (avatar == 2)
			yahoo_send_picture_request(gc, who);
		else if ((avatar == 0) || (avatar == 1)) {
			YahooFriend *f;
			purple_buddy_icons_set_for_user(gc->account, who, NULL, 0, NULL);
			if ((f = yahoo_friend_find(gc, who)))
				yahoo_friend_set_buddy_icon_need_request(f, TRUE);
			purple_debug_misc("yahoo", "Setting user %s's icon to NULL.\n", who);
		}
	}