gaim/gaim

This is a temporary fix for the rate limit problems.
oldstatus
2005-10-15, Mark Doliner
649cffd7a416
This is a temporary fix for the rate limit problems.

Cause: Gaim uses the SNAC 0x0004/0x0015 to fetch the away message
of each user in your buddy list. Previously this SNAC was in a
"rate class" that had an extremely lenient rate limit. Gaim would
fetch a new away message at most every 1.3 seconds. AOL recently
moved this SNAC to be in the same rate class as most of the other
SNACs (send IM, add buddy, connect to chat room, etc.) My temporary
fix is to bump this delay to 10 seconds.

We copied this functionality from iChat, and it looks like they
might actually be having the same problem (but I didn't even take
a packet capture to verify). If this is the case, AOL is really
stupid.

Possibly better fixes:
* Use the rate information to delay packets so that we never hit
a rate limit
* There may be a different SNAC that is now more leniently rate
limited. Possibly 0x0002/0x0005 or 0x0004/0x0006.
/*
* gaim-remote
*
* Copyright (C) 2002, Sean Egan <bj91704@binghamton.edu>
*
* 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
*
*/
/* Somewhat inspired by XMMS:
* Copyright (C) 1998-2002 Peter Alm, Mikael Alm, Olle Hallnas,
* Thomas Nilsson and 4Front Technologies
* Copyright (C) 1999-2002 Haavard Kvaalen
*/
/* This provides code for connecting to a Gaim socket and communicating with
* it. It will eventually be made a library once the core and ui are split. */
#include "internal.h"
#include <sys/un.h>
#include <gaim-remote/remote.h>
#include <sys/types.h>
#include <unistd.h>
void
gaim_remote_session_send_packet(int fd, GaimRemotePacket *p)
{
int len = sizeof(p->type) + sizeof(p->subtype) +
sizeof(p->length) + p->length;
char *pack = g_malloc(len);
char *a = pack;
memcpy (a, &(p->type), sizeof(p->type));
a = a + sizeof(p->type);
memcpy (a, &(p->subtype), sizeof(p->subtype));
a = a + sizeof(p->subtype);
memcpy (a, &(p->length), sizeof(p->length));
a = a + sizeof(p->length);
memcpy (a, p->data, p->length);
write(fd, pack, len);
g_free(pack);
}
void
gaim_remote_packet_append_string(GaimRemotePacket *p, char *str)
{
int len = p->length + strlen(str);
char *k = g_malloc(len);
memcpy(k, p->data, p->length);
memcpy(k + p->length, str, strlen(str));
if (p->data)
g_free(p->data);
p->data = k;
p->length = len;
}
void
gaim_remote_packet_append_char(GaimRemotePacket *p, char c)
{
int len = p->length + sizeof(char);
char *k = g_malloc(len);
memcpy(k, p->data, p->length);
k[p->length] = c;
if (p->data)
g_free(p->data);
p->data = k;
p->length = len;
}
void
gaim_remote_packet_append_raw(GaimRemotePacket *p, char *str, int len)
{
int lent = p->length + len;
char *k = g_malloc(lent);
memcpy(k, p->data, p->length);
memcpy(k + p->length, str, len);
if (p->data)
g_free(p->data);
p->data = k;
p->length = lent;
}
GaimRemotePacket *
gaim_remote_packet_new(guchar type, guchar subtype)
{
GaimRemotePacket *p = g_new0(GaimRemotePacket, 1);
p->type = type;
p->subtype = subtype;
p->length = 0;
p->data = NULL;
return p;
}
void
gaim_remote_packet_free(GaimRemotePacket *p)
{
if (p->data)
g_free(p->data);
g_free(p);
}
GaimRemotePacket *
gaim_remote_session_read_packet(int fd)
{
GaimRemotePacket *p = g_new0(GaimRemotePacket, 1);
char *data = NULL;
if (!(read(fd, &p->type, sizeof(p->type)))) {
g_free(p);
return NULL;
}
if (!(read(fd, &p->subtype, sizeof(p->subtype)))) {
g_free(p);
return NULL;
}
if (!(read(fd, &p->length, sizeof(p->length)))) {
g_free(p);
return NULL;
}
if (p->length) {
data = g_try_malloc(p->length);
if ((data == NULL) || !(read(fd, data, p->length))) {
g_free(p);
return NULL;
}
}
p->data = data;
return p;
}
/* copied directly from xmms_connect_to_session */
int
gaim_remote_session_connect(int session)
{
gint fd;
uid_t stored_uid, euid;
struct sockaddr_un saddr;
if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) != -1)
{
saddr.sun_family = AF_UNIX;
stored_uid = getuid();
euid = geteuid();
setuid(euid);
sprintf(saddr.sun_path, "%s/gaim_%s.%d",
g_get_tmp_dir(), g_get_user_name(), session);
setreuid(stored_uid, euid);
if (connect(fd, (struct sockaddr *) &saddr, sizeof (saddr)) != -1)
return fd;
}
close(fd);
return -1;
}
gboolean
gaim_remote_session_exists(int sess)
{
GaimRemotePacket *pack = NULL;
int fd = gaim_remote_session_connect(sess);
if (fd > 0) {
pack = gaim_remote_packet_new(CUI_TYPE_META, CUI_META_PING);
gaim_remote_session_send_packet(fd, pack);
gaim_remote_packet_free(pack);
close(fd);
return TRUE;
}
return FALSE;
}