static void
flap_connection_send_byte_stream(ByteStream *bs, FlapConnection *conn, size_t count)
{
if (conn == NULL)
return;
/* Make sure we don't send past the end of the bs */
if (count > byte_stream_bytes_left(bs))
count = byte_stream_bytes_left(bs); /* truncate to remaining space */
if (count == 0)
return;
/* Add everything to our outgoing buffer */
purple_circ_buffer_append(conn->buffer_outgoing, bs->data, count);
/* If we haven't already started writing stuff, then start the cycle */
if (conn->watcher_outgoing == 0)
{
if (conn->gsc) {
conn->watcher_outgoing = purple_input_add(conn->gsc->fd,
PURPLE_INPUT_WRITE, send_cb, conn);
send_cb(conn, -1, 0);
} else if (conn->fd >= 0) {
conn->watcher_outgoing = purple_input_add(conn->fd,
PURPLE_INPUT_WRITE, send_cb, conn);
send_cb(conn, -1, 0);
}
}
}
guint64
aim_locate_getcaps_short(OscarData *od, ByteStream *bs, int len)
{
guint64 flags = 0;
int offset;
for (offset = 0; byte_stream_bytes_left(bs) && (offset < len); offset += 0x02) {
guint8 *cap;
int i, identified;
cap = byte_stream_getraw(bs, 0x02);
for (i = 0, identified = 0; !(aim_caps[i].flag & OSCAR_CAPABILITY_LAST); i++) {
if (memcmp(&aim_caps[i].data[2], cap, 0x02) == 0) {
flags |= aim_caps[i].flag;
identified++;
break; /* should only match once... */
}
}
if (!identified)
purple_debug_misc("oscar", "unknown short capability: {%02x%02x}\n", cap[0], cap[1]);
g_free(cap);
}
return flags;
}
static const char *
aim_receive_custom_icon(OscarData *od, ByteStream *bs, int len)
{
int offset;
const char *result = NULL;
for (offset = 0; byte_stream_bytes_left(bs) && (offset < len); offset += 0x10) {
/* check wheather this capability is a custom user icon */
guint8 *cap;
int i;
cap = byte_stream_getraw(bs, 0x10);
for (i = 0; icq_custom_icons[i].mood; i++) {
if (memcmp(&icq_custom_icons[i].data, cap, 0x10) == 0) {
purple_debug_misc("oscar", "Custom status icon: %s\n", icq_purple_moods[i].description);
result = icq_custom_icons[i].mood;
break; /* should only match once... */
}
}
g_free(cap);
}
return result;
}
int
byte_stream_putcaps(ByteStream *bs, guint64 caps)
{
int i;
if (!bs)
return -EINVAL;
for (i = 0; byte_stream_bytes_left(bs); i++) {
if (aim_caps[i].flag == OSCAR_CAPABILITY_LAST)
break;
if (caps & aim_caps[i].flag)
byte_stream_putraw(bs, aim_caps[i].data, 0x10);
}
return 0;
}
static void
parse_snac(OscarData *od, FlapConnection *conn, FlapFrame *frame)
{
aim_module_t *cur;
aim_modsnac_t snac;
if (byte_stream_bytes_left(&frame->data) < 10)
return;
snac.family = byte_stream_get16(&frame->data);
snac.subtype = byte_stream_get16(&frame->data);
snac.flags = byte_stream_get16(&frame->data);
snac.id = byte_stream_get32(&frame->data);
/* SNAC flags are apparently uniform across all SNACs, so we handle them here */
if (snac.flags & 0x0001) {
/*
* This means the SNAC will be followed by another SNAC with
* related information. We don't need to do anything about
* this here.
*/
}
if (snac.flags & 0x8000) {
/*
* This packet contains the version of the family that this SNAC is
* in. You get this when your SSI module is version 2 or higher.
* For now we have no need for this, but you could always save
* it as a part of aim_modnsac_t, or something. The format is...
* 2 byte length of total mini-header (which is 6 bytes), then TLV
* of type 0x0001, length 0x0002, value is the 2 byte version
* number
*/
byte_stream_advance(&frame->data, byte_stream_get16(&frame->data));
}
for (cur = (aim_module_t *)od->modlistv; cur; cur = cur->next) {
if (!(cur->flags & AIM_MODFLAG_MULTIFAMILY) &&
(cur->family != snac.family))
continue;
if (cur->snachandler(od, conn, cur, frame, &snac, &frame->data))
return;
}
}
/* Subtypes 0x0003 and 0x0004 */
static int
userlistchange(OscarData *od, FlapConnection *conn, aim_module_t *mod, FlapFrame *frame, aim_modsnac_t *snac, ByteStream *bs)
{
aim_userinfo_t *userinfo = NULL;
aim_rxcallback_t userfunc;
int curcount = 0, ret = 0;
while (byte_stream_bytes_left(bs)) {
curcount++;
userinfo = g_realloc(userinfo, curcount * sizeof(aim_userinfo_t));
aim_info_extract(od, bs, &userinfo[curcount-1]);
}
if ((userfunc = aim_callhandler(od, snac->family, snac->subtype)))
ret = userfunc(od, conn, frame, curcount, userinfo);
aim_info_free(userinfo);
g_free(userinfo);
return ret;
}
static void
parse_flap_ch4(OscarData *od, FlapConnection *conn, FlapFrame *frame)
{
GSList *tlvlist;
char *msg = NULL;
if (byte_stream_bytes_left(&frame->data) == 0) {
/* XXX should do something with this */
return;
}
/* An ICQ account is logging in */
if (conn->type == SNAC_FAMILY_AUTH)
{
parse_fakesnac(od, conn, frame, 0x0017, 0x0003);
return;
}
tlvlist = aim_tlvlist_read(&frame->data);
if (aim_tlv_gettlv(tlvlist, 0x0009, 1))
conn->disconnect_code = aim_tlv_get16(tlvlist, 0x0009, 1);
if (aim_tlv_gettlv(tlvlist, 0x000b, 1))
msg = aim_tlv_getstr(tlvlist, 0x000b, 1);
/*
* The server ended this FLAP connnection, so let's be nice and
* close the physical TCP connection
*/
flap_connection_schedule_destroy(conn,
OSCAR_DISCONNECT_REMOTE_CLOSED, msg);
aim_tlvlist_free(tlvlist);
g_free(msg);
}
/*
* AIM is fairly regular about providing user info. This is a generic
* routine to extract it in its standard form.
*/
int
aim_info_extract(OscarData *od, ByteStream *bs, aim_userinfo_t *outinfo)
{
int curtlv, tlvcnt;
guint8 bnlen;
if (!bs || !outinfo)
return -EINVAL;
/* Clear out old data first */
memset(outinfo, 0x00, sizeof(aim_userinfo_t));
/*
* Username. Stored as an unterminated string prepended with a
* byte containing its length.
*/
bnlen = byte_stream_get8(bs);
outinfo->bn = byte_stream_getstr(bs, bnlen);
/*
* Warning Level. Stored as an unsigned short.
*/
outinfo->warnlevel = byte_stream_get16(bs);
/*
* TLV Count. Unsigned short representing the number of
* Type-Length-Value triples that follow.
*/
tlvcnt = byte_stream_get16(bs);
/*
* Parse out the Type-Length-Value triples as they're found.
*/
for (curtlv = 0; curtlv < tlvcnt; curtlv++) {
guint16 type, length;
int endpos;
int curpos;
type = byte_stream_get16(bs);
length = byte_stream_get16(bs);
curpos = byte_stream_curpos(bs);
endpos = curpos + MIN(length, byte_stream_bytes_left(bs));
if (type == 0x0001) {
/*
* User flags
*
* Specified as any of the following ORed together:
* 0x0001 Unconfirmed account
* 0x0002 Unknown bit 2
* 0x0004 AOL Main Service user
* 0x0008 Unknown bit 4
* 0x0010 Free (AIM) user
* 0x0020 Away
* 0x0040 ICQ user (AIM bit also set)
* 0x0080 Mobile device
* 0x0400 Bot (like ActiveBuddy)
*/
outinfo->flags = byte_stream_get16(bs);
outinfo->present |= AIM_USERINFO_PRESENT_FLAGS;
} else if (type == 0x0002) {
/*
* Account creation time
*
* The time/date that the user originally registered for
* the service, stored in time_t format.
*
* I'm not sure how this differs from type 5 ("member
* since").
*
* Note: This is the field formerly known as "member
* since". All these years and I finally found out
* that I got the name wrong.
*/
outinfo->createtime = byte_stream_get32(bs);
outinfo->present |= AIM_USERINFO_PRESENT_CREATETIME;
} else if (type == 0x0003) {
/*
* On-Since date
*
* The time/date that the user started their current
* session, stored in time_t format.
*/
outinfo->onlinesince = byte_stream_get32(bs);
outinfo->present |= AIM_USERINFO_PRESENT_ONLINESINCE;
} else if (type == 0x0004) {
/*
* Idle time
*
* Number of minutes since the user actively used the
* service.
*
* Note that the client tells the server when to start
* counting idle times, so this may or may not be
* related to reality.
*/
outinfo->idletime = byte_stream_get16(bs);
outinfo->present |= AIM_USERINFO_PRESENT_IDLE;
} else if (type == 0x0005) {
/*
* Member since date
*
* The time/date that the user originally registered for
* the service, stored in time_t format.
*
* This is sometimes sent instead of type 2 ("account
* creation time"), particularly in the self-info.
* And particularly for ICQ?
*/
outinfo->membersince = byte_stream_get32(bs);
outinfo->present |= AIM_USERINFO_PRESENT_MEMBERSINCE;
} else if (type == 0x0006) {
/*
* ICQ Online Status
*
* ICQ's Away/DND/etc "enriched" status. Some decoding
* of values done by Scott <*****@*****.**>
*/
byte_stream_get16(bs);
outinfo->icqinfo.status = byte_stream_get16(bs);
outinfo->present |= AIM_USERINFO_PRESENT_ICQEXTSTATUS;
} else if (type == 0x0008) {
/*
* Client type, or some such.
*/
} else if (type == 0x000a) {
/*
* ICQ User IP Address
*
* Ahh, the joy of ICQ security.
*/
outinfo->icqinfo.ipaddr = byte_stream_get32(bs);
outinfo->present |= AIM_USERINFO_PRESENT_ICQIPADDR;
} else if (type == 0x000c) {
/*
* Random crap containing the IP address,
* apparently a port number, and some Other Stuff.
*
* Format is:
* 4 bytes - Our IP address, 0xc0 a8 01 2b for 192.168.1.43
*/
byte_stream_getrawbuf(bs, outinfo->icqinfo.crap, 0x25);
outinfo->present |= AIM_USERINFO_PRESENT_ICQDATA;
} else if (type == 0x000d) {
PurpleAccount *account = purple_connection_get_account(od->gc);
const char *mood;
/*
* OSCAR Capability information
*/
outinfo->capabilities |= aim_locate_getcaps(od, bs, length);
outinfo->present |= AIM_USERINFO_PRESENT_CAPABILITIES;
byte_stream_setpos(bs, curpos);
mood = aim_receive_custom_icon(od, bs, length);
if (mood)
purple_prpl_got_user_status(account, outinfo->bn, "mood",
PURPLE_MOOD_NAME, mood,
NULL);
else
purple_prpl_got_user_status_deactive(account, outinfo->bn, "mood");
} else if (type == 0x000e) {
/*
* AOL capability information
*/
} else if ((type == 0x000f) || (type == 0x0010)) {
/*
* Type = 0x000f: Session Length. (AIM)
* Type = 0x0010: Session Length. (AOL)
*
* The duration, in seconds, of the user's current
* session.
*
* Which TLV type this comes in depends on the
* service the user is using (AIM or AOL).
*/
outinfo->sessionlen = byte_stream_get32(bs);
outinfo->present |= AIM_USERINFO_PRESENT_SESSIONLEN;
} else if (type == 0x0014) {
/*
* My instance number.
*/
byte_stream_get8(bs);
} else if (type == 0x0019) {
/*
* OSCAR short capability information. A shortened
* form of the normal capabilities.
*/
outinfo->capabilities |= aim_locate_getcaps_short(od, bs, length);
outinfo->present |= AIM_USERINFO_PRESENT_CAPABILITIES;
} else if (type == 0x001a) {
/*
* Type = 0x001a
*
* AOL short capability information. A shortened
* form of the normal capabilities.
*/
} else if (type == 0x001b) {
/*
* Encryption certification MD5 checksum.
*/
} else if (type == 0x001d) {
/*
* Buddy icon information and status/available messages.
*
* This almost seems like the AIM protocol guys gave
* the iChat guys a Type, and the iChat guys tried to
* cram as much cool shit into it as possible. Then
* the Windows AIM guys were like, "hey, that's
* pretty neat, let's copy those prawns."
*
* In that spirit, this can contain a custom message,
* kind of like an away message, but you're not away
* (it's called an "available" message). Or it can
* contain information about the buddy icon the user
* has stored on the server.
*/
guint16 type2;
guint8 number2, length2;
int endpos2;
/*
* Continue looping as long as we're able to read type2,
* number2, and length2.
*/
while (byte_stream_curpos(bs) + 4 <= endpos) {
type2 = byte_stream_get16(bs);
number2 = byte_stream_get8(bs);
length2 = byte_stream_get8(bs);
endpos2 = byte_stream_curpos(bs) + MIN(length2, byte_stream_bytes_left(bs));
switch (type2) {
case 0x0000: { /* This is an official buddy icon? */
/* This is always 5 bytes of "0x02 01 d2 04 72"? */
} break;
case 0x0001: { /* A buddy icon checksum */
if ((length2 > 0) && ((number2 == 0x00) || (number2 == 0x01))) {
g_free(outinfo->iconcsum);
outinfo->iconcsumtype = number2;
outinfo->iconcsum = byte_stream_getraw(bs, length2);
outinfo->iconcsumlen = length2;
}
} break;
case 0x0002: { /* A status/available message */
g_free(outinfo->status);
g_free(outinfo->status_encoding);
if (length2 >= 4) {
outinfo->status_len = byte_stream_get16(bs);
outinfo->status = byte_stream_getstr(bs, outinfo->status_len);
if (byte_stream_get16(bs) == 0x0001) { /* We have an encoding */
byte_stream_get16(bs);
outinfo->status_encoding = byte_stream_getstr(bs, byte_stream_get16(bs));
} else {
/* No explicit encoding, client should use UTF-8 */
outinfo->status_encoding = NULL;
}
} else {
byte_stream_advance(bs, length2);
outinfo->status_len = 0;
outinfo->status = g_strdup("");
outinfo->status_encoding = NULL;
}
} break;
case 0x0009: { /* An iTunes Music Store link */
g_free(outinfo->itmsurl);
g_free(outinfo->itmsurl_encoding);
if (length2 >= 4) {
outinfo->itmsurl_len = byte_stream_get16(bs);
outinfo->itmsurl = byte_stream_getstr(bs, outinfo->itmsurl_len);
if (byte_stream_get16(bs) == 0x0001) {
/* We have an encoding */
byte_stream_get16(bs);
outinfo->itmsurl_encoding = byte_stream_getstr(bs, byte_stream_get16(bs));
} else {
/* No explicit encoding, client should use UTF-8 */
outinfo->itmsurl_encoding = NULL;
}
} else {
byte_stream_advance(bs, length2);
outinfo->itmsurl_len = 0;
outinfo->itmsurl = g_strdup("");
outinfo->itmsurl_encoding = NULL;
}
} break;
case 0x000e: { /* ICQ mood */
PurpleAccount *account = purple_connection_get_account(od->gc);
char *icqmood;
gint32 i;
const char *mood = NULL;
icqmood = byte_stream_getstr(bs, length2);
/* icqmood = "" means X-Status
* with no mood icon. */
if (*icqmood) {
for (i = 0; icqmoods[i].icqmood; i++) {
if (!strcmp(icqmood, icqmoods[i].icqmood)) {
mood = icqmoods[i].mood;
break; /* should only match once... */
}
}
if (!mood)
purple_debug_warning("oscar", "Unknown icqmood: %s\n", icqmood);
}
g_free(icqmood);
if (mood)
purple_prpl_got_user_status(account, outinfo->bn, "mood",
PURPLE_MOOD_NAME, mood,
NULL);
else
purple_prpl_got_user_status_deactive(account, outinfo->bn, "mood");
} break;
}
/* Save ourselves. */
byte_stream_setpos(bs, endpos2);
}
} else if (type == 0x001e) {
/*
* Always four bytes, but it doesn't look like an int.
*/
} else if (type == 0x001f) {
/*
* Upper bytes of user flags. Can be any size
*
* Seen on a buddy using DeadAIM. Data was 4 bytes:
* 0x00 00 00 10
*/
} else if (type == 0x0023) {
/*
* Last Buddy Feed update time, in seconds since the epoch.
*/
} else if (type == 0x0026) {
/*
* Time that the profile was set, in seconds since the epoch.
*/
} else if (type == 0x0027) {
/*
* Time that the away message was set, in seconds since the epoch.
*/
} else if (type == 0x002a) {
/*
* Country code based on GeoIP data.
*/
} else {
/*
* Reaching here indicates that either AOL has
* added yet another TLV for us to deal with,
* or the parsing has gone Terribly Wrong.
*
* Either way, inform the owner and attempt
* recovery.
*
*/
#ifdef LOG_UNKNOWN_TLV
purple_debug_misc("oscar", "userinfo: **warning: unexpected TLV:\n");
purple_debug_misc("oscar", "userinfo: bn =%s\n", outinfo->bn);
dumptlv(od, type, bs, length);
#endif
}
/* Save ourselves. */
byte_stream_setpos(bs, endpos);
}
aim_locate_adduserinfo(od, outinfo);
return 0;
}
