xt_status jabber_pkt_iq( struct xt_node *node, gpointer data )
{
struct im_connection *ic = data;
struct jabber_data *jd = ic->proto_data;
struct xt_node *c, *reply = NULL;
char *type, *s;
int st, pack = 1;
type = xt_find_attr( node, "type" );
if( !type )
{
imcb_error( ic, "Received IQ packet without type." );
imc_logout( ic, TRUE );
return XT_ABORT;
}
if( strcmp( type, "result" ) == 0 || strcmp( type, "error" ) == 0 )
{
return jabber_cache_handle_packet( ic, node );
}
else if( strcmp( type, "get" ) == 0 )
{
if( !( ( c = xt_find_node( node->children, "query" ) ) ||
( c = xt_find_node( node->children, "ping" ) ) ||
( c = xt_find_node( node->children, "time" ) ) ) ||
!( s = xt_find_attr( c, "xmlns" ) ) )
{
/* Sigh. Who decided to suddenly invent new elements
instead of just sticking with <query/>? */
return XT_HANDLED;
}
reply = xt_new_node( "query", NULL, NULL );
xt_add_attr( reply, "xmlns", s );
/* Of course this is a very essential query to support. ;-) */
if( strcmp( s, XMLNS_VERSION ) == 0 )
{
xt_add_child( reply, xt_new_node( "name", set_getstr( &ic->acc->set, "user_agent" ), NULL ) );
xt_add_child( reply, xt_new_node( "version", BITLBEE_VERSION, NULL ) );
xt_add_child( reply, xt_new_node( "os", ARCH, NULL ) );
}
else if( strcmp( s, XMLNS_TIME_OLD ) == 0 )
{
time_t time_ep;
char buf[1024];
buf[sizeof(buf)-1] = 0;
time_ep = time( NULL );
strftime( buf, sizeof( buf ) - 1, "%Y%m%dT%H:%M:%S", gmtime( &time_ep ) );
xt_add_child( reply, xt_new_node( "utc", buf, NULL ) );
strftime( buf, sizeof( buf ) - 1, "%Z", localtime( &time_ep ) );
xt_add_child( reply, xt_new_node( "tz", buf, NULL ) );
}
else if( strcmp( s, XMLNS_TIME ) == 0 )
{
time_t time_ep;
char buf[1024];
buf[sizeof(buf)-1] = 0;
time_ep = time( NULL );
xt_free_node( reply );
reply = xt_new_node( "time", NULL, NULL );
xt_add_attr( reply, "xmlns", XMLNS_TIME );
strftime( buf, sizeof( buf ) - 1, "%Y%m%dT%H:%M:%SZ", gmtime( &time_ep ) );
xt_add_child( reply, xt_new_node( "utc", buf, NULL ) );
strftime( buf, sizeof( buf ) - 1, "%z", localtime( &time_ep ) );
if( strlen( buf ) >= 5 )
{
buf[6] = '\0';
buf[5] = buf[4];
buf[4] = buf[3];
buf[3] = ':';
}
xt_add_child( reply, xt_new_node( "tzo", buf, NULL ) );
}
else if( strcmp( s, XMLNS_PING ) == 0 )
{
xt_free_node( reply );
reply = jabber_make_packet( "iq", "result", xt_find_attr( node, "from" ), NULL );
if( ( s = xt_find_attr( node, "id" ) ) )
xt_add_attr( reply, "id", s );
pack = 0;
}
else if( strcmp( s, XMLNS_DISCO_INFO ) == 0 )
{
const char *features[] = { XMLNS_DISCO_INFO,
XMLNS_VERSION,
XMLNS_TIME_OLD,
XMLNS_TIME,
XMLNS_CHATSTATES,
XMLNS_MUC,
XMLNS_PING,
XMLNS_SI,
XMLNS_BYTESTREAMS,
XMLNS_FILETRANSFER,
NULL };
const char **f;
c = xt_new_node( "identity", NULL, NULL );
xt_add_attr( c, "category", "client" );
xt_add_attr( c, "type", "pc" );
xt_add_attr( c, "name", set_getstr( &ic->acc->set, "user_agent" ) );
xt_add_child( reply, c );
for( f = features; *f; f ++ )
{
c = xt_new_node( "feature", NULL, NULL );
xt_add_attr( c, "var", *f );
xt_add_child( reply, c );
}
}
else
{
xt_free_node( reply );
reply = jabber_make_error_packet( node, "feature-not-implemented", "cancel", NULL );
pack = 0;
}
}
else if( strcmp( type, "set" ) == 0 )
{
if( ( c = xt_find_node( node->children, "si" ) ) &&
( s = xt_find_attr( c, "xmlns" ) ) &&
( strcmp( s, XMLNS_SI ) == 0 ) )
{
return jabber_si_handle_request( ic, node, c );
}
else if( !( c = xt_find_node( node->children, "query" ) ) ||
!( s = xt_find_attr( c, "xmlns" ) ) )
{
return XT_HANDLED;
}
else if( strcmp( s, XMLNS_ROSTER ) == 0 )
{
/* This is a roster push. XMPP servers send this when someone
was added to (or removed from) the buddy list. AFAIK they're
sent even if we added this buddy in our own session. */
int bare_len = strlen( jd->me );
if( ( s = xt_find_attr( node, "from" ) ) == NULL ||
( strncmp( s, jd->me, bare_len ) == 0 &&
( s[bare_len] == 0 || s[bare_len] == '/' ) ) )
{
jabber_parse_roster( ic, node, NULL );
/* Should we generate a reply here? Don't think it's
very important... */
}
else
{
imcb_log( ic, "Warning: %s tried to fake a roster push!", s ? s : "(unknown)" );
xt_free_node( reply );
reply = jabber_make_error_packet( node, "not-allowed", "cancel", NULL );
pack = 0;
}
}
else if( strcmp( s, XMLNS_BYTESTREAMS ) == 0 )
{
/* Bytestream Request (stage 2 of file transfer) */
return jabber_bs_recv_request( ic, node, c );
}
else
{
xt_free_node( reply );
reply = jabber_make_error_packet( node, "feature-not-implemented", "cancel", NULL );
pack = 0;
}
}
/* If we recognized the xmlns and managed to generate a reply,
finish and send it. */
if( reply )
{
/* Normally we still have to pack it into an iq-result
packet, but for errors, for example, we don't. */
if( pack )
{
reply = jabber_make_packet( "iq", "result", xt_find_attr( node, "from" ), reply );
if( ( s = xt_find_attr( node, "id" ) ) )
xt_add_attr( reply, "id", s );
}
st = jabber_write_packet( ic, reply );
xt_free_node( reply );
if( !st )
return XT_ABORT;
}
return XT_HANDLED;
}
xt_status jabber_pkt_presence( struct xt_node *node, gpointer data )
{
struct im_connection *ic = data;
char *from = xt_find_attr( node, "from" );
char *type = xt_find_attr( node, "type" ); /* NULL should mean the person is online. */
struct xt_node *c, *cap;
struct jabber_buddy *bud, *send_presence = NULL;
int is_chat = 0;
char *s;
if( !from )
return XT_HANDLED;
if( ( s = strchr( from, '/' ) ) )
{
*s = 0;
if( jabber_chat_by_jid( ic, from ) )
is_chat = 1;
*s = '/';
}
if( type == NULL )
{
if( !( bud = jabber_buddy_by_jid( ic, from, GET_BUDDY_EXACT | GET_BUDDY_CREAT ) ) )
{
if( set_getbool( &ic->irc->set, "debug" ) )
imcb_log( ic, "Warning: Could not handle presence information from JID: %s", from );
return XT_HANDLED;
}
g_free( bud->away_message );
if( ( c = xt_find_node( node->children, "status" ) ) && c->text_len > 0 )
bud->away_message = g_strdup( c->text );
else
bud->away_message = NULL;
if( ( c = xt_find_node( node->children, "show" ) ) && c->text_len > 0 )
{
bud->away_state = (void*) jabber_away_state_by_code( c->text );
}
else
{
bud->away_state = NULL;
/* Let's only set last_act if there's *no* away state,
since it could be some auto-away thingy. */
bud->last_act = time( NULL );
}
if( ( c = xt_find_node( node->children, "priority" ) ) && c->text_len > 0 )
bud->priority = atoi( c->text );
else
bud->priority = 0;
if( bud && ( cap = xt_find_node( node->children, "c" ) ) &&
( s = xt_find_attr( cap, "xmlns" ) ) && strcmp( s, XMLNS_CAPS ) == 0 )
{
/* This <presence> stanza includes an XEP-0115
capabilities part. Not too interesting, but we can
see if it has an ext= attribute. */
s = xt_find_attr( cap, "ext" );
if( s && ( strstr( s, "cstates" ) || strstr( s, "chatstate" ) ) )
bud->flags |= JBFLAG_DOES_XEP85;
/* This field can contain more information like xhtml
support, but we don't support that ourselves.
Officially the ext= tag was deprecated, but enough
clients do send it.
(I'm aware that this is not the right way to use
this field.) See for an explanation of ext=:
http://www.xmpp.org/extensions/attic/xep-0115-1.3.html*/
}
if( is_chat )
jabber_chat_pkt_presence( ic, bud, node );
else
send_presence = jabber_buddy_by_jid( ic, bud->bare_jid, 0 );
}
else if( strcmp( type, "unavailable" ) == 0 )
{
if( ( bud = jabber_buddy_by_jid( ic, from, 0 ) ) == NULL )
{
if( set_getbool( &ic->irc->set, "debug" ) )
imcb_log( ic, "Warning: Received presence information from unknown JID: %s", from );
return XT_HANDLED;
}
/* Handle this before we delete the JID. */
if( is_chat )
{
jabber_chat_pkt_presence( ic, bud, node );
}
if( strchr( from, '/' ) == NULL )
/* Sometimes servers send a type="unavailable" from a
bare JID, which should mean that suddenly all
resources for this JID disappeared. */
jabber_buddy_remove_bare( ic, from );
else
jabber_buddy_remove( ic, from );
if( is_chat )
{
/* Nothing else to do for now? */
}
else if( ( s = strchr( from, '/' ) ) )
{
*s = 0;
/* If another resource is still available, send its presence
information. */
if( ( send_presence = jabber_buddy_by_jid( ic, from, 0 ) ) == NULL )
{
/* Otherwise, count him/her as offline now. */
imcb_buddy_status( ic, from, 0, NULL, NULL );
}
*s = '/';
}
else
{
imcb_buddy_status( ic, from, 0, NULL, NULL );
}
}
else if( strcmp( type, "subscribe" ) == 0 )
{
jabber_buddy_ask( ic, from );
}
else if( strcmp( type, "subscribed" ) == 0 )
{
/* Not sure about this one, actually... */
imcb_log( ic, "%s just accepted your authorization request", from );
}
else if( strcmp( type, "unsubscribe" ) == 0 || strcmp( type, "unsubscribed" ) == 0 )
{
/* Do nothing here. Plenty of control freaks or over-curious
souls get excited when they can see who still has them in
their buddy list and who finally removed them. Somehow I
got the impression that those are the people who get
removed from many buddy lists for "some" reason...
If you're one of those people, this is your chance to write
your first line of code in C... */
}
else if( strcmp( type, "error" ) == 0 )
{
return jabber_cache_handle_packet( ic, node );
/*
struct jabber_error *err;
if( ( c = xt_find_node( node->children, "error" ) ) )
{
err = jabber_error_parse( c, XMLNS_STANZA_ERROR );
imcb_error( ic, "Stanza (%s) error: %s%s%s", node->name,
err->code, err->text ? ": " : "",
err->text ? err->text : "" );
jabber_error_free( err );
} */
}
if( send_presence )
{
int is_away = 0;
if( send_presence->away_state && !( *send_presence->away_state->code == 0 ||
strcmp( send_presence->away_state->code, "chat" ) == 0 ) )
is_away = OPT_AWAY;
imcb_buddy_status( ic, send_presence->bare_jid, OPT_LOGGED_IN | is_away,
( is_away && send_presence->away_state ) ?
send_presence->away_state->full_name : NULL,
send_presence->away_message );
}
return XT_HANDLED;
}
