[5997488] | 1 | /***************************************************************************\ |
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| 2 | * * |
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| 3 | * BitlBee - An IRC to IM gateway * |
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| 4 | * Jabber module - SASL authentication * |
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| 5 | * * |
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| 6 | * Copyright 2006 Wilmer van der Gaast <wilmer@gaast.net> * |
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| 7 | * * |
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| 8 | * This program is free software; you can redistribute it and/or modify * |
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| 9 | * it under the terms of the GNU General Public License as published by * |
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| 10 | * the Free Software Foundation; either version 2 of the License, or * |
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| 11 | * (at your option) any later version. * |
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| 12 | * * |
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| 13 | * This program is distributed in the hope that it will be useful, * |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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| 16 | * GNU General Public License for more details. * |
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| 17 | * * |
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| 18 | * You should have received a copy of the GNU General Public License along * |
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| 19 | * with this program; if not, write to the Free Software Foundation, Inc., * |
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| 20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * |
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| 21 | * * |
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| 22 | \***************************************************************************/ |
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| 23 | |
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| 24 | #include "jabber.h" |
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| 25 | #include "base64.h" |
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| 26 | |
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| 27 | #define SASL_NS "urn:ietf:params:xml:ns:xmpp-sasl" |
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| 28 | |
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| 29 | xt_status sasl_pkt_mechanisms( struct xt_node *node, gpointer data ) |
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| 30 | { |
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| 31 | struct gaim_connection *gc = data; |
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| 32 | struct jabber_data *jd = gc->proto_data; |
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| 33 | struct xt_node *c, *reply; |
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| 34 | char *s; |
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| 35 | int sup_plain = 0, sup_digest = 0; |
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| 36 | |
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| 37 | s = xt_find_attr( node, "xmlns" ); |
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| 38 | if( !s || strcmp( s, SASL_NS ) != 0 ) |
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| 39 | { |
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| 40 | signoff( gc ); |
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| 41 | return XT_ABORT; |
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| 42 | } |
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| 43 | |
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| 44 | c = node->children; |
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| 45 | while( ( c = xt_find_node( c, "mechanism" ) ) ) |
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| 46 | { |
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| 47 | if( c->text && g_strcasecmp( c->text, "PLAIN" ) == 0 ) |
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| 48 | sup_plain = 1; |
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| 49 | if( c->text && g_strcasecmp( c->text, "DIGEST-MD5" ) == 0 ) |
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| 50 | sup_digest = 1; |
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| 51 | |
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| 52 | c = c->next; |
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| 53 | } |
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| 54 | |
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| 55 | if( !sup_plain && !sup_digest ) |
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| 56 | { |
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| 57 | signoff( gc ); |
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| 58 | return XT_ABORT; |
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| 59 | } |
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| 60 | |
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| 61 | reply = xt_new_node( "auth", NULL, NULL ); |
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| 62 | xt_add_attr( reply, "xmlns", SASL_NS ); |
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| 63 | |
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| 64 | if( sup_plain ) |
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| 65 | { |
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| 66 | int len; |
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| 67 | |
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| 68 | xt_add_attr( reply, "mechanism", "PLAIN" ); |
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| 69 | |
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| 70 | /* With SASL PLAIN in XMPP, the text should be b64(\0user\0pass) */ |
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| 71 | len = strlen( jd->username ) + strlen( gc->acc->pass ) + 2; |
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| 72 | s = g_malloc( len + 1 ); |
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| 73 | s[0] = 0; |
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| 74 | strcpy( s + 1, jd->username ); |
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| 75 | strcpy( s + 2 + strlen( jd->username ), gc->acc->pass ); |
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| 76 | reply->text = base64_encode( s, len ); |
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| 77 | reply->text_len = strlen( reply->text ); |
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| 78 | g_free( s ); |
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| 79 | } |
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| 80 | |
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| 81 | if( !jabber_write_packet( gc, reply ) ) |
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| 82 | { |
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| 83 | xt_free_node( reply ); |
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| 84 | return XT_ABORT; |
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| 85 | } |
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| 86 | xt_free_node( reply ); |
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| 87 | |
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| 88 | /* To prevent classic authentication from happening. */ |
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| 89 | jd->flags |= JFLAG_STREAM_STARTED; |
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| 90 | |
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| 91 | return XT_HANDLED; |
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| 92 | } |
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| 93 | |
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| 94 | xt_status sasl_pkt_challenge( struct xt_node *node, gpointer data ) |
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| 95 | { |
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| 96 | } |
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| 97 | |
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| 98 | xt_status sasl_pkt_result( struct xt_node *node, gpointer data ) |
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| 99 | { |
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| 100 | struct gaim_connection *gc = data; |
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| 101 | struct jabber_data *jd = gc->proto_data; |
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| 102 | char *s; |
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| 103 | |
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| 104 | s = xt_find_attr( node, "xmlns" ); |
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| 105 | if( !s || strcmp( s, SASL_NS ) != 0 ) |
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| 106 | { |
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| 107 | signoff( gc ); |
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| 108 | return XT_ABORT; |
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| 109 | } |
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| 110 | |
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| 111 | if( strcmp( node->name, "success" ) == 0 ) |
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| 112 | { |
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| 113 | set_login_progress( gc, 1, "Authentication finished" ); |
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| 114 | jd->flags |= JFLAG_AUTHENTICATED | JFLAG_STREAM_RESTART; |
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| 115 | } |
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| 116 | else if( strcmp( node->name, "failure" ) == 0 ) |
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| 117 | { |
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| 118 | hide_login_progress( gc, "Authentication failure" ); |
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| 119 | signoff( gc ); |
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| 120 | return XT_ABORT; |
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| 121 | } |
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| 122 | |
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| 123 | return XT_HANDLED; |
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| 124 | } |
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