diff options
Diffstat (limited to 'protocols/jabber/iq.c')
| -rw-r--r-- | protocols/jabber/iq.c | 364 |
1 files changed, 364 insertions, 0 deletions
diff --git a/protocols/jabber/iq.c b/protocols/jabber/iq.c new file mode 100644 index 00000000..8a7b3192 --- /dev/null +++ b/protocols/jabber/iq.c @@ -0,0 +1,364 @@ +/***************************************************************************\ +* * +* BitlBee - An IRC to IM gateway * +* Jabber module - IQ packets * +* * +* Copyright 2006 Wilmer van der Gaast <wilmer@gaast.net> * +* * +* 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., * +* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * +* * +\***************************************************************************/ + +#include "jabber.h" + +xt_status jabber_pkt_iq( struct xt_node *node, gpointer data ) +{ + struct gaim_connection *gc = data; + struct jabber_data *jd = gc->proto_data; + struct xt_node *c, *reply = NULL; + char *type, *s; + int st, pack = 1; + + type = xt_find_attr( node, "type" ); + + if( !type ) + { + hide_login_progress_error( gc, "Received IQ packet without type." ); + signoff( gc ); + return XT_ABORT; + } + + if( strcmp( type, "result" ) == 0 || strcmp( type, "error" ) == 0 ) + { + struct jabber_cache_entry *entry; + + if( ( s = xt_find_attr( node, "id" ) ) == NULL ) + { + /* Silently ignore it, without an ID we don't know + how to handle the packet, but it doesn't have + to be a serious problem. */ + return XT_HANDLED; + } + + entry = g_hash_table_lookup( jd->node_cache, s ); + + if( entry == NULL ) + serv_got_crap( gc, "WARNING: Received IQ %s packet with unknown/expired ID %s!", type, s ); + else if( entry->func ) + return entry->func( gc, node, entry->node ); + } + else if( strcmp( type, "get" ) == 0 ) + { + if( !( c = xt_find_node( node->children, "query" ) ) || + !( s = xt_find_attr( c, "xmlns" ) ) ) + { + serv_got_crap( gc, "WARNING: Received incomplete IQ-get packet" ); + 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, "jabber:iq:version" ) == 0 ) + { + xt_add_child( reply, xt_new_node( "name", "BitlBee", 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, "jabber:iq:time" ) == 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, "http://jabber.org/protocol/disco#info" ) == 0 ) + { + c = xt_new_node( "identity", NULL, NULL ); + xt_add_attr( c, "category", "client" ); + xt_add_attr( c, "type", "pc" ); + xt_add_attr( c, "name", "BitlBee" ); + xt_add_child( reply, c ); + + c = xt_new_node( "feature", NULL, NULL ); + xt_add_attr( c, "var", "jabber:iq:version" ); + xt_add_child( reply, c ); + + c = xt_new_node( "feature", NULL, NULL ); + xt_add_attr( c, "var", "jabber:iq:time" ); + xt_add_child( reply, c ); + + c = xt_new_node( "feature", NULL, NULL ); + xt_add_attr( c, "var", "http://jabber.org/protocol/chatstates" ); + xt_add_child( reply, c ); + + /* Later this can be useful to announce things like + MUC support. */ + } + else + { + xt_free_node( reply ); + reply = jabber_make_error_packet( node, "feature-not-implemented", "cancel" ); + pack = 0; + } + } + else if( strcmp( type, "set" ) == 0 ) + { + xt_free_node( reply ); + reply = jabber_make_error_packet( node, "feature-not-implemented", "cancel" ); + 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( gc, reply ); + xt_free_node( reply ); + if( !st ) + return XT_ABORT; + } + + return XT_HANDLED; +} + +static xt_status jabber_do_iq_auth( struct gaim_connection *gc, struct xt_node *node, struct xt_node *orig ); +static xt_status jabber_finish_iq_auth( struct gaim_connection *gc, struct xt_node *node, struct xt_node *orig ); + +int jabber_init_iq_auth( struct gaim_connection *gc ) +{ + struct jabber_data *jd = gc->proto_data; + struct xt_node *node; + int st; + + node = xt_new_node( "query", NULL, xt_new_node( "username", jd->username, NULL ) ); + xt_add_attr( node, "xmlns", "jabber:iq:auth" ); + node = jabber_make_packet( "iq", "get", NULL, node ); + + jabber_cache_add( gc, node, jabber_do_iq_auth ); + st = jabber_write_packet( gc, node ); + + return st; +} + +static xt_status jabber_do_iq_auth( struct gaim_connection *gc, struct xt_node *node, struct xt_node *orig ) +{ + struct jabber_data *jd = gc->proto_data; + struct xt_node *reply, *query; + xt_status st; + char *s; + + query = xt_find_node( node->children, "query" ); + + /* Time to authenticate ourselves! */ + reply = xt_new_node( "query", NULL, NULL ); + xt_add_attr( reply, "xmlns", "jabber:iq:auth" ); + xt_add_child( reply, xt_new_node( "username", jd->username, NULL ) ); + xt_add_child( reply, xt_new_node( "resource", set_getstr( &gc->acc->set, "resource" ), NULL ) ); + + if( xt_find_node( query->children, "digest" ) && ( s = xt_find_attr( jd->xt->root, "id" ) ) ) + { + /* We can do digest authentication, it seems, and of + course we prefer that. */ + SHA_CTX sha; + char hash_hex[40]; + unsigned char hash[20]; + int i; + + shaInit( &sha ); + shaUpdate( &sha, (unsigned char*) s, strlen( s ) ); + shaUpdate( &sha, (unsigned char*) gc->acc->pass, strlen( gc->acc->pass ) ); + shaFinal( &sha, hash ); + + for( i = 0; i < 20; i ++ ) + sprintf( hash_hex + i * 2, "%02x", hash[i] ); + + xt_add_child( reply, xt_new_node( "digest", hash_hex, NULL ) ); + } + else if( xt_find_node( query->children, "password" ) ) + { + /* We'll have to stick with plaintext. Let's hope we're using SSL/TLS... */ + xt_add_child( reply, xt_new_node( "password", gc->acc->pass, NULL ) ); + } + else + { + xt_free_node( reply ); + + hide_login_progress( gc, "Can't find suitable authentication method" ); + signoff( gc ); + return XT_ABORT; + } + + reply = jabber_make_packet( "iq", "set", NULL, reply ); + jabber_cache_add( gc, reply, jabber_finish_iq_auth ); + st = jabber_write_packet( gc, reply ); + + return st ? XT_HANDLED : XT_ABORT; +} + +static xt_status jabber_finish_iq_auth( struct gaim_connection *gc, struct xt_node *node, struct xt_node *orig ) +{ + char *type = xt_find_attr( node, "type" ); + struct jabber_data *jd = gc->proto_data; + + if( strcmp( type, "error" ) == 0 ) + { + hide_login_progress( gc, "Authentication failure" ); + signoff( gc ); + return XT_ABORT; + } + else if( strcmp( type, "result" ) == 0 ) + { + /* This happens when we just successfully authenticated the + old (non-SASL) way. */ + jd->flags |= JFLAG_AUTHENTICATED; + if( !jabber_get_roster( gc ) ) + return XT_ABORT; + } + + return XT_HANDLED; +} + +xt_status jabber_pkt_bind_sess( struct gaim_connection *gc, struct xt_node *node, struct xt_node *orig ) +{ + struct jabber_data *jd = gc->proto_data; + struct xt_node *c; + char *s; + + if( ( c = xt_find_node( node->children, "bind" ) ) ) + { + c = xt_find_node( c->children, "jid" ); + if( c && c->text_len && ( s = strchr( c->text, '/' ) ) && + strcmp( s + 1, set_getstr( &gc->acc->set, "resource" ) ) != 0 ) + serv_got_crap( gc, "Server changed session resource string to `%s'", s + 1 ); + + jd->flags &= ~JFLAG_WAIT_BIND; + } + else + { + jd->flags &= ~JFLAG_WAIT_SESSION; + } + + if( ( jd->flags & ( JFLAG_WAIT_BIND | JFLAG_WAIT_SESSION ) ) == 0 ) + { + if( !jabber_get_roster( gc ) ) + return XT_ABORT; + } + + return XT_HANDLED; +} + +static xt_status jabber_parse_roster( struct gaim_connection *gc, struct xt_node *node, struct xt_node *orig ); + +int jabber_get_roster( struct gaim_connection *gc ) +{ + struct xt_node *node; + int st; + + set_login_progress( gc, 1, "Authenticated, requesting buddy list" ); + + node = xt_new_node( "query", NULL, NULL ); + xt_add_attr( node, "xmlns", "jabber:iq:roster" ); + node = jabber_make_packet( "iq", "get", NULL, node ); + + jabber_cache_add( gc, node, jabber_parse_roster ); + st = jabber_write_packet( gc, node ); + + return st; +} + +static xt_status jabber_parse_roster( struct gaim_connection *gc, struct xt_node *node, struct xt_node *orig ) +{ + struct xt_node *query, *c; + + query = xt_find_node( node->children, "query" ); + + c = query->children; + while( ( c = xt_find_node( c, "item" ) ) ) + { + char *jid = xt_find_attr( c, "jid" ); + char *name = xt_find_attr( c, "name" ); + char *sub = xt_find_attr( c, "subscription" ); + + if( jid && sub && ( strcmp( sub, "both" ) == 0 || strcmp( sub, "to" ) == 0 ) ) + add_buddy( gc, NULL, jid, name ); + + c = c->next; + } + + account_online( gc ); + + return XT_HANDLED; +} + +int jabber_add_to_roster( struct gaim_connection *gc, char *handle, char *name ) +{ + struct xt_node *node; + int st; + + /* Build the item entry */ + node = xt_new_node( "item", NULL, NULL ); + xt_add_attr( node, "jid", handle ); + if( name ) + xt_add_attr( node, "name", name ); + + /* And pack it into a roster-add packet */ + node = xt_new_node( "query", NULL, node ); + xt_add_attr( node, "xmlns", "jabber:iq:roster" ); + node = jabber_make_packet( "iq", "set", NULL, node ); + + st = jabber_write_packet( gc, node ); + + xt_free_node( node ); + return st; +} + +int jabber_remove_from_roster( struct gaim_connection *gc, char *handle ) +{ + struct xt_node *node; + int st; + + /* Build the item entry */ + node = xt_new_node( "item", NULL, NULL ); + xt_add_attr( node, "jid", handle ); + xt_add_attr( node, "subscription", "remove" ); + + /* And pack it into a roster-add packet */ + node = xt_new_node( "query", NULL, node ); + xt_add_attr( node, "xmlns", "jabber:iq:roster" ); + node = jabber_make_packet( "iq", "set", NULL, node ); + + st = jabber_write_packet( gc, node ); + + xt_free_node( node ); + return st; +} |