buddy_opt.c

Linux下的多协议即时通讯程序源代码

/**
 * @file buddy_opt.c
 *
 * 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 "debug.h"
#include "internal.h"
#include "notify.h"
#include "request.h"

#include "buddy_info.h"
#include "buddy_list.h"
#include "buddy_opt.h"
#include "char_conv.h"
#include "crypt.h"
#include "header_info.h"
#include "im.h"
#include "keep_alive.h"
#include "packet_parse.h"
#include "send_core.h"
#include "utils.h"

#define PURPLE_GROUP_QQ_FORMAT          "QQ (%s)"
#define PURPLE_GROUP_QQ_UNKNOWN         "QQ Unknown"
#define PURPLE_GROUP_QQ_BLOCKED         "QQ Blocked"

#define QQ_REMOVE_BUDDY_REPLY_OK      0x00
#define QQ_REMOVE_SELF_REPLY_OK       0x00
#define QQ_ADD_BUDDY_AUTH_REPLY_OK    0x30	/* ASCII value of "0" */

enum {
	QQ_MY_AUTH_APPROVE = 0x30,	/* ASCII value of "0" */
	QQ_MY_AUTH_REJECT = 0x31,	/* ASCII value of "1" */
	QQ_MY_AUTH_REQUEST = 0x32,	/* ASCII value of "2" */
};

typedef struct _qq_add_buddy_request {
	guint32 uid;
	guint16 seq;
} qq_add_buddy_request;

/* send packet to remove a buddy from my buddy list */
static void _qq_send_packet_remove_buddy(PurpleConnection *gc, guint32 uid)
{
	gchar uid_str[11];

	g_return_if_fail(uid > 0);

	g_snprintf(uid_str, sizeof(uid_str), "%d", uid);
	qq_send_cmd(gc, QQ_CMD_DEL_FRIEND, TRUE, 0, 
			TRUE, (guint8 *) uid_str, strlen(uid_str));
}

/* try to remove myself from someone's buddy list */
static void _qq_send_packet_remove_self_from(PurpleConnection *gc, guint32 uid)
{
	guint8 *raw_data, *cursor;

	g_return_if_fail(uid > 0);

	raw_data = g_newa(guint8, 4);
	cursor = raw_data;
	create_packet_dw(raw_data, &cursor, uid);

	qq_send_cmd(gc, QQ_CMD_REMOVE_SELF, TRUE, 0, TRUE, raw_data, 4);
}

/* try to add a buddy without authentication */
static void _qq_send_packet_add_buddy(PurpleConnection *gc, guint32 uid)
{
	qq_data *qd;
	qq_add_buddy_request *req;
	gchar uid_str[11];

	g_return_if_fail(uid > 0);

	/* we need to send the ascii code of this uid to qq server */
	g_snprintf(uid_str, sizeof(uid_str), "%d", uid);
	qq_send_cmd(gc, QQ_CMD_ADD_FRIEND_WO_AUTH, TRUE, 0, 
			TRUE, (guint8 *) uid_str, strlen(uid_str));

	/* must be set after sending packet to get the correct send_seq */
	qd = (qq_data *) gc->proto_data;
	req = g_new0(qq_add_buddy_request, 1);
	req->seq = qd->send_seq;
	req->uid = uid;
	qd->add_buddy_request = g_list_append(qd->add_buddy_request, req);
}

/* this buddy needs authentication, text conversion is done at lowest level */
static void _qq_send_packet_buddy_auth(PurpleConnection *gc, guint32 uid, const gchar response, const gchar *text)
{
	gchar *text_qq, uid_str[11];
	guint8 bar, *cursor, *raw_data;

	g_return_if_fail(uid != 0);

	g_snprintf(uid_str, sizeof(uid_str), "%d", uid);
	bar = 0x1f;
	raw_data = g_newa(guint8, QQ_MSG_IM_MAX);
	cursor = raw_data;

	create_packet_data(raw_data, &cursor, (guint8 *) uid_str, strlen(uid_str));
	create_packet_b(raw_data, &cursor, bar);
	create_packet_b(raw_data, &cursor, response);

	if (text != NULL) {
		text_qq = utf8_to_qq(text, QQ_CHARSET_DEFAULT);
		create_packet_b(raw_data, &cursor, bar);
		create_packet_data(raw_data, &cursor, (guint8 *) text_qq, strlen(text_qq));
		g_free(text_qq);
	}

	qq_send_cmd(gc, QQ_CMD_BUDDY_AUTH, TRUE, 0, TRUE, raw_data, cursor - raw_data);
}

static void _qq_send_packet_add_buddy_auth_with_gc_and_uid(gc_and_uid *g, const gchar *text)
{
	PurpleConnection *gc;
	guint32 uid;
	g_return_if_fail(g != NULL);

	gc = g->gc;
	uid = g->uid;
	g_return_if_fail(uid != 0);

	_qq_send_packet_buddy_auth(gc, uid, QQ_MY_AUTH_REQUEST, text);
	g_free(g);
}

/* the real packet to reject and request is sent from here */
static void _qq_reject_add_request_real(gc_and_uid *g, const gchar *reason)
{
	gint uid;
	PurpleConnection *gc;

	g_return_if_fail(g != NULL);

	gc = g->gc;
	uid = g->uid;
	g_return_if_fail(uid != 0);

	_qq_send_packet_buddy_auth(gc, uid, QQ_MY_AUTH_REJECT, reason);
	g_free(g);
}

/* we approve other's request of adding me as friend */
void qq_approve_add_request_with_gc_and_uid(gc_and_uid *g)
{
	gint uid;
	PurpleConnection *gc;

	g_return_if_fail(g != NULL);

	gc = g->gc;
	uid = g->uid;
	g_return_if_fail(uid != 0);

	_qq_send_packet_buddy_auth(gc, uid, QQ_MY_AUTH_APPROVE, NULL);
	g_free(g);
}

void qq_do_nothing_with_gc_and_uid(gc_and_uid *g, const gchar *msg)
{
	g_free(g);
}

/* we reject other's request of adding me as friend */
void qq_reject_add_request_with_gc_and_uid(gc_and_uid *g)
{
	gint uid;
	gchar *msg1, *msg2;
	PurpleConnection *gc;
	gc_and_uid *g2;
	gchar *nombre;

	g_return_if_fail(g != NULL);

	gc = g->gc;
	uid = g->uid;
	g_return_if_fail(uid != 0);

	g_free(g);

	g2 = g_new0(gc_and_uid, 1);
	g2->gc = gc;
	g2->uid = uid;

	msg1 = g_strdup_printf(_("You rejected %d's request"), uid);
	msg2 = g_strdup(_("Input your reason:"));

	nombre = uid_to_purple_name(uid);
	purple_request_input(gc, _("Reject request"), msg1, msg2,
			   _("Sorry, you are not my type..."), TRUE, FALSE,
			   NULL, _("Reject"), G_CALLBACK(_qq_reject_add_request_real), _("Cancel"), NULL,
			   purple_connection_get_account(gc), nombre, NULL,
			   g2);
	g_free(nombre);
}

void qq_add_buddy_with_gc_and_uid(gc_and_uid *g)
{
	gint uid;
	PurpleConnection *gc;

	g_return_if_fail(g != NULL);

	gc = g->gc;
	uid = g->uid;
	g_return_if_fail(uid != 0);

	_qq_send_packet_add_buddy(gc, uid);
	g_free(g);
}

void qq_block_buddy_with_gc_and_uid(gc_and_uid *g)
{
	guint32 uid;
	PurpleConnection *gc;
	PurpleBuddy buddy;
	PurpleGroup group;

	g_return_if_fail(g != NULL);

	gc = g->gc;
	uid = g->uid;
	g_return_if_fail(uid > 0);

	buddy.name = uid_to_purple_name(uid);
	group.name = PURPLE_GROUP_QQ_BLOCKED;

	qq_remove_buddy(gc, &buddy, &group);
	_qq_send_packet_remove_self_from(gc, uid);
}

/*  process reply to add_buddy_auth request */
void qq_process_add_buddy_auth_reply(guint8 *buf, gint buf_len, PurpleConnection *gc)
{
	qq_data *qd;
	gint len;
	guint8 *data, *cursor, reply;
	gchar **segments, *msg_utf8;

	g_return_if_fail(buf != NULL && buf_len != 0);

	qd = (qq_data *) gc->proto_data;
	len = buf_len;
	data = g_newa(guint8, len);
	cursor = data;

	if (qq_crypt(DECRYPT, buf, buf_len, qd->session_key, data, &len)) {
		read_packet_b(data, &cursor, len, &reply);
		if (reply != QQ_ADD_BUDDY_AUTH_REPLY_OK) {
			purple_debug(PURPLE_DEBUG_WARNING, "QQ", "Add buddy with auth request fails\n");
			if (NULL == (segments = split_data(data, len, "\x1f", 2)))
				return;
			msg_utf8 = qq_to_utf8(segments[1], QQ_CHARSET_DEFAULT);
			purple_notify_error(gc, NULL, _("Add buddy with auth request fails"), msg_utf8);
			g_free(msg_utf8);
		} else {
			purple_debug(PURPLE_DEBUG_INFO, "QQ", "Add buddy with auth request OK\n");
		}
	} else {
		purple_debug(PURPLE_DEBUG_ERROR, "QQ", "Error decrypt add buddy with auth reply\n");
	}
}

/* process the server reply for my request to remove a buddy */
void qq_process_remove_buddy_reply(guint8 *buf, gint buf_len, PurpleConnection *gc)
{
	qq_data *qd;
	gint len;
	guint8 *data, *cursor, reply;

	g_return_if_fail(buf != NULL && buf_len != 0);

	qd = (qq_data *) gc->proto_data;