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-rw-r--r--protocols/jabber/jabber.c99
-rw-r--r--protocols/jabber/jabber.h10
-rw-r--r--protocols/jabber/sasl.c195
3 files changed, 232 insertions, 72 deletions
diff --git a/protocols/jabber/jabber.c b/protocols/jabber/jabber.c
index 7d9547ab..9b94b21d 100644
--- a/protocols/jabber/jabber.c
+++ b/protocols/jabber/jabber.c
@@ -59,6 +59,8 @@ static void jabber_init( account_t *acc )
s = set_add( &acc->set, "activity_timeout", "600", set_eval_int, acc );
+ s = set_add( &acc->set, "oauth", "false", set_eval_bool, acc );
+
g_snprintf( str, sizeof( str ), "%d", jabber_port_list[0] );
s = set_add( &acc->set, "port", str, set_eval_int, acc );
s->flags |= ACC_SET_OFFLINE_ONLY;
@@ -98,9 +100,7 @@ static void jabber_login( account_t *acc )
{
struct im_connection *ic = imcb_new( acc );
struct jabber_data *jd = g_new0( struct jabber_data, 1 );
- struct ns_srv_reply **srvl = NULL, *srv = NULL;
- char *connect_to, *s;
- int i;
+ char *s;
/* For now this is needed in the _connected() handlers if using
GLib event handling, to make sure we're not handling events
@@ -137,63 +137,37 @@ static void jabber_login( account_t *acc )
*s = 0;
}
- /* This code isn't really pretty. Backwards compatibility never is... */
- s = acc->server;
- while( s )
+ jd->node_cache = g_hash_table_new_full( g_str_hash, g_str_equal, NULL, jabber_cache_entry_free );
+ jd->buddies = g_hash_table_new( g_str_hash, g_str_equal );
+
+ if( set_getbool( &acc->set, "oauth" ) )
{
- static int had_port = 0;
-
- if( strncmp( s, "ssl", 3 ) == 0 )
- {
- set_setstr( &acc->set, "ssl", "true" );
-
- /* Flush this part so that (if this was the first
- part of the server string) acc->server gets
- flushed. We don't want to have to do this another
- time. :-) */
- *s = 0;
- s ++;
-
- /* Only set this if the user didn't specify a custom
- port number already... */
- if( !had_port )
- set_setint( &acc->set, "port", 5223 );
- }
- else if( isdigit( *s ) )
- {
- int i;
-
- /* The first character is a digit. It could be an
- IP address though. Only accept this as a port#
- if there are only digits. */
- for( i = 0; isdigit( s[i] ); i ++ );
-
- /* If the first non-digit character is a colon or
- the end of the string, save the port number
- where it should be. */
- if( s[i] == ':' || s[i] == 0 )
- {
- sscanf( s, "%d", &i );
- set_setint( &acc->set, "port", i );
-
- /* See above. */
- *s = 0;
- s ++;
- }
-
- had_port = 1;
- }
+ jd->fd = jd->r_inpa = jd->w_inpa = -1;
- s = strchr( s, ':' );
- if( s )
+ /* For the first login with OAuth, we have to authenticate via the browser.
+ For subsequent logins, exchange the refresh token for a valid access
+ token (even though the last one maybe didn't expire yet). */
+ if( strncmp( acc->pass, "refresh_token=", 14 ) != 0 )
{
- *s = 0;
- s ++;
+ sasl_oauth2_init( ic );
+ ic->flags |= OPT_SLOW_LOGIN;
}
+ else
+ sasl_oauth2_refresh( ic, acc->pass + 14 );
}
-
- jd->node_cache = g_hash_table_new_full( g_str_hash, g_str_equal, NULL, jabber_cache_entry_free );
- jd->buddies = g_hash_table_new( g_str_hash, g_str_equal );
+ else
+ jabber_connect( ic );
+}
+
+/* Separate this from jabber_login() so we can do OAuth first if necessary.
+ Putting this in io.c would probably be more correct. */
+void jabber_connect( struct im_connection *ic )
+{
+ account_t *acc = ic->acc;
+ struct jabber_data *jd = ic->proto_data;
+ int i;
+ char *connect_to;
+ struct ns_srv_reply **srvl = NULL, *srv = NULL;
/* Figure out the hostname to connect to. */
if( acc->server && *acc->server )
@@ -318,6 +292,7 @@ static void jabber_logout( struct im_connection *ic )
xt_free( jd->xt );
+ g_free( jd->oauth2_access_token );
g_free( jd->away_message );
g_free( jd->username );
g_free( jd );
@@ -336,6 +311,20 @@ static int jabber_buddy_msg( struct im_connection *ic, char *who, char *message,
if( g_strcasecmp( who, JABBER_XMLCONSOLE_HANDLE ) == 0 )
return jabber_write( ic, message, strlen( message ) );
+ if( g_strcasecmp( who, "jabber_oauth" ) == 0 )
+ {
+ if( sasl_oauth2_get_refresh_token( ic, message ) )
+ {
+ return 1;
+ }
+ else
+ {
+ imcb_error( ic, "OAuth failure" );
+ imc_logout( ic, TRUE );
+ return 0;
+ }
+ }
+
if( ( s = strchr( who, '=' ) ) && jabber_chat_by_jid( ic, s + 1 ) )
bud = jabber_buddy_by_ext_jid( ic, who, 0 );
else
diff --git a/protocols/jabber/jabber.h b/protocols/jabber/jabber.h
index adf9a291..c68ae343 100644
--- a/protocols/jabber/jabber.h
+++ b/protocols/jabber/jabber.h
@@ -46,6 +46,8 @@ typedef enum
activates all XEP-85 related code. */
JFLAG_XMLCONSOLE = 64, /* If the user added an xmlconsole buddy. */
JFLAG_STARTTLS_DONE = 128, /* If a plaintext session was converted to TLS. */
+
+ JFLAG_SASL_FB = 0x10000, /* Trying Facebook authentication. */
} jabber_flags_t;
typedef enum
@@ -92,6 +94,8 @@ struct jabber_data
char *username; /* USERNAME@server */
char *server; /* username@SERVER -=> server/domain, not hostname */
+ char *oauth2_access_token;
+
/* After changing one of these two (or the priority setting), call
presence_send_update() to inform the server about the changes. */
const struct jabber_away_state *away_state;
@@ -231,6 +235,9 @@ struct jabber_transfer
#define XMLNS_BYTESTREAMS "http://jabber.org/protocol/bytestreams" /* XEP-0065 */
#define XMLNS_IBB "http://jabber.org/protocol/ibb" /* XEP-0047 */
+/* jabber.c */
+void jabber_connect( struct im_connection *ic );
+
/* iq.c */
xt_status jabber_pkt_iq( struct xt_node *node, gpointer data );
int jabber_init_iq_auth( struct im_connection *ic );
@@ -315,6 +322,9 @@ xt_status sasl_pkt_mechanisms( struct xt_node *node, gpointer data );
xt_status sasl_pkt_challenge( struct xt_node *node, gpointer data );
xt_status sasl_pkt_result( struct xt_node *node, gpointer data );
gboolean sasl_supported( struct im_connection *ic );
+void sasl_oauth2_init( struct im_connection *ic );
+int sasl_oauth2_get_refresh_token( struct im_connection *ic, const char *msg );
+int sasl_oauth2_refresh( struct im_connection *ic, const char *refresh_token );
/* conference.c */
struct groupchat *jabber_chat_join( struct im_connection *ic, const char *room, const char *nick, const char *password );
diff --git a/protocols/jabber/sasl.c b/protocols/jabber/sasl.c
index 53248ef3..f21a6706 100644
--- a/protocols/jabber/sasl.c
+++ b/protocols/jabber/sasl.c
@@ -25,6 +25,8 @@
#include "jabber.h"
#include "base64.h"
+#include "oauth2.h"
+#include "oauth.h"
xt_status sasl_pkt_mechanisms( struct xt_node *node, gpointer data )
{
@@ -32,7 +34,7 @@ xt_status sasl_pkt_mechanisms( struct xt_node *node, gpointer data )
struct jabber_data *jd = ic->proto_data;
struct xt_node *c, *reply;
char *s;
- int sup_plain = 0, sup_digest = 0;
+ int sup_plain = 0, sup_digest = 0, sup_oauth2 = 0, sup_fb = 0;
if( !sasl_supported( ic ) )
{
@@ -58,6 +60,10 @@ xt_status sasl_pkt_mechanisms( struct xt_node *node, gpointer data )
sup_plain = 1;
if( c->text && g_strcasecmp( c->text, "DIGEST-MD5" ) == 0 )
sup_digest = 1;
+ if( c->text && g_strcasecmp( c->text, "X-OAUTH2" ) == 0 )
+ sup_oauth2 = 1;
+ if( c->text && g_strcasecmp( c->text, "X-FACEBOOK-PLATFORM" ) == 0 )
+ sup_fb = 1;
c = c->next;
}
@@ -72,7 +78,38 @@ xt_status sasl_pkt_mechanisms( struct xt_node *node, gpointer data )
reply = xt_new_node( "auth", NULL, NULL );
xt_add_attr( reply, "xmlns", XMLNS_SASL );
- if( sup_digest )
+ if( set_getbool( &ic->acc->set, "oauth" ) )
+ {
+ int len;
+
+ if( !sup_oauth2 )
+ {
+ imcb_error( ic, "OAuth requested, but not supported by server" );
+ imc_logout( ic, FALSE );
+ xt_free_node( reply );
+ return XT_ABORT;
+ }
+
+ /* X-OAUTH2 is, not *the* standard OAuth2 SASL/XMPP implementation.
+ It's currently used by GTalk and vaguely documented on
+ http://code.google.com/apis/cloudprint/docs/rawxmpp.html . */
+ xt_add_attr( reply, "mechanism", "X-OAUTH2" );
+
+ len = strlen( jd->username ) + strlen( jd->oauth2_access_token ) + 2;
+ s = g_malloc( len + 1 );
+ s[0] = 0;
+ strcpy( s + 1, jd->username );
+ strcpy( s + 2 + strlen( jd->username ), jd->oauth2_access_token );
+ reply->text = base64_encode( (unsigned char *)s, len );
+ reply->text_len = strlen( reply->text );
+ g_free( s );
+ }
+ else if( sup_fb && strstr( ic->acc->pass, "session_key=" ) )
+ {
+ xt_add_attr( reply, "mechanism", "X-FACEBOOK-PLATFORM" );
+ jd->flags |= JFLAG_SASL_FB;
+ }
+ else if( sup_digest )
{
xt_add_attr( reply, "mechanism", "DIGEST-MD5" );
@@ -95,7 +132,7 @@ xt_status sasl_pkt_mechanisms( struct xt_node *node, gpointer data )
g_free( s );
}
- if( !jabber_write_packet( ic, reply ) )
+ if( reply && !jabber_write_packet( ic, reply ) )
{
xt_free_node( reply );
return XT_ABORT;
@@ -196,12 +233,12 @@ xt_status sasl_pkt_challenge( struct xt_node *node, gpointer data )
{
struct im_connection *ic = data;
struct jabber_data *jd = ic->proto_data;
- struct xt_node *reply = NULL;
+ struct xt_node *reply_pkt = NULL;
char *nonce = NULL, *realm = NULL, *cnonce = NULL;
unsigned char cnonce_bin[30];
char *digest_uri = NULL;
char *dec = NULL;
- char *s = NULL;
+ char *s = NULL, *reply = NULL;
xt_status ret = XT_ABORT;
if( node->text_len == 0 )
@@ -209,7 +246,50 @@ xt_status sasl_pkt_challenge( struct xt_node *node, gpointer data )
dec = frombase64( node->text );
- if( !( s = sasl_get_part( dec, "rspauth" ) ) )
+ if( jd->flags & JFLAG_SASL_FB )
+ {
+ /* Facebook proprietary authentication. Not as useful as it seemed, but
+ the code's written now, may as well keep it..
+
+ Mechanism is described on http://developers.facebook.com/docs/chat/
+ and in their Python module. It's all mostly useless because the tokens
+ expire after 24h. */
+ GSList *p_in = NULL, *p_out = NULL, *p;
+ md5_state_t md5;
+ char time[33], *token;
+ const char *secret;
+
+ oauth_params_parse( &p_in, dec );
+ oauth_params_add( &p_out, "nonce", oauth_params_get( &p_in, "nonce" ) );
+ oauth_params_add( &p_out, "method", oauth_params_get( &p_in, "method" ) );
+ oauth_params_free( &p_in );
+
+ token = g_strdup( ic->acc->pass );
+ oauth_params_parse( &p_in, token );
+ g_free( token );
+ oauth_params_add( &p_out, "session_key", oauth_params_get( &p_in, "session_key" ) );
+
+ g_snprintf( time, sizeof( time ), "%lld", (long long) ( gettime() * 1000 ) );
+ oauth_params_add( &p_out, "call_id", time );
+ oauth_params_add( &p_out, "api_key", oauth2_service_facebook.consumer_key );
+ oauth_params_add( &p_out, "v", "1.0" );
+ oauth_params_add( &p_out, "format", "XML" );
+
+ md5_init( &md5 );
+ for( p = p_out; p; p = p->next )
+ md5_append( &md5, p->data, strlen( p->data ) );
+
+ secret = oauth_params_get( &p_in, "secret" );
+ if( secret )
+ md5_append( &md5, (unsigned char*) secret, strlen( secret ) );
+ md5_finish_ascii( &md5, time );
+ oauth_params_add( &p_out, "sig", time );
+
+ reply = oauth_params_string( p_out );
+ oauth_params_free( &p_out );
+ oauth_params_free( &p_in );
+ }
+ else if( !( s = sasl_get_part( dec, "rspauth" ) ) )
{
/* See RFC 2831 for for information. */
md5_state_t A1, A2, H;
@@ -270,23 +350,20 @@ xt_status sasl_pkt_challenge( struct xt_node *node, gpointer data )
sprintf( Hh + i * 2, "%02x", Hr[i] );
/* Now build the SASL response string: */
- g_free( dec );
- dec = g_strdup_printf( "username=\"%s\",realm=\"%s\",nonce=\"%s\",cnonce=\"%s\","
- "nc=%08x,qop=auth,digest-uri=\"%s\",response=%s,charset=%s",
- jd->username, realm, nonce, cnonce, 1, digest_uri, Hh, "utf-8" );
- s = tobase64( dec );
+ reply = g_strdup_printf( "username=\"%s\",realm=\"%s\",nonce=\"%s\",cnonce=\"%s\","
+ "nc=%08x,qop=auth,digest-uri=\"%s\",response=%s,charset=%s",
+ jd->username, realm, nonce, cnonce, 1, digest_uri, Hh, "utf-8" );
}
else
{
/* We found rspauth, but don't really care... */
- g_free( s );
- s = NULL;
}
- reply = xt_new_node( "response", s, NULL );
- xt_add_attr( reply, "xmlns", XMLNS_SASL );
+ s = reply ? tobase64( reply ) : NULL;
+ reply_pkt = xt_new_node( "response", s, NULL );
+ xt_add_attr( reply_pkt, "xmlns", XMLNS_SASL );
- if( !jabber_write_packet( ic, reply ) )
+ if( !jabber_write_packet( ic, reply_pkt ) )
goto silent_error;
ret = XT_HANDLED;
@@ -300,10 +377,11 @@ silent_error:
g_free( digest_uri );
g_free( cnonce );
g_free( nonce );
+ g_free( reply );
g_free( realm );
g_free( dec );
g_free( s );
- xt_free_node( reply );
+ xt_free_node( reply_pkt );
return ret;
}
@@ -346,3 +424,86 @@ gboolean sasl_supported( struct im_connection *ic )
return ( jd->xt && jd->xt->root && xt_find_attr( jd->xt->root, "version" ) ) != 0;
}
+
+void sasl_oauth2_init( struct im_connection *ic )
+{
+ char *msg, *url;
+
+ imcb_log( ic, "Starting OAuth authentication" );
+
+ /* Temporary contact, just used to receive the OAuth response. */
+ imcb_add_buddy( ic, "jabber_oauth", NULL );
+ url = oauth2_url( &oauth2_service_google,
+ "https://www.googleapis.com/auth/googletalk" );
+ msg = g_strdup_printf( "Open this URL in your browser to authenticate: %s", url );
+ imcb_buddy_msg( ic, "jabber_oauth", msg, 0, 0 );
+ imcb_buddy_msg( ic, "jabber_oauth", "Respond to this message with the returned "
+ "authorization token.", 0, 0 );
+
+ g_free( msg );
+ g_free( url );
+}
+
+static gboolean sasl_oauth2_remove_contact( gpointer data, gint fd, b_input_condition cond )
+{
+ struct im_connection *ic = data;
+ if( g_slist_find( jabber_connections, ic ) )
+ imcb_remove_buddy( ic, "jabber_oauth", NULL );
+ return FALSE;
+}
+
+static void sasl_oauth2_got_token( gpointer data, const char *access_token, const char *refresh_token );
+
+int sasl_oauth2_get_refresh_token( struct im_connection *ic, const char *msg )
+{
+ char *code;
+ int ret;
+
+ imcb_log( ic, "Requesting OAuth access token" );
+
+ /* Don't do it here because the caller may get confused if the contact
+ we're currently sending a message to is deleted. */
+ b_timeout_add( 1, sasl_oauth2_remove_contact, ic );
+
+ code = g_strdup( msg );
+ g_strstrip( code );
+ ret = oauth2_access_token( &oauth2_service_google, OAUTH2_AUTH_CODE,
+ code, sasl_oauth2_got_token, ic );
+
+ g_free( code );
+ return ret;
+}
+
+int sasl_oauth2_refresh( struct im_connection *ic, const char *refresh_token )
+{
+ return oauth2_access_token( &oauth2_service_google, OAUTH2_AUTH_REFRESH,
+ refresh_token, sasl_oauth2_got_token, ic );
+}
+
+static void sasl_oauth2_got_token( gpointer data, const char *access_token, const char *refresh_token )
+{
+ struct im_connection *ic = data;
+ struct jabber_data *jd;
+
+ if( g_slist_find( jabber_connections, ic ) == NULL )
+ return;
+
+ jd = ic->proto_data;
+
+ if( access_token == NULL )
+ {
+ imcb_error( ic, "OAuth failure (missing access token)" );
+ imc_logout( ic, TRUE );
+ return;
+ }
+ if( refresh_token != NULL )
+ {
+ g_free( ic->acc->pass );
+ ic->acc->pass = g_strdup_printf( "refresh_token=%s", refresh_token );
+ }
+
+ g_free( jd->oauth2_access_token );
+ jd->oauth2_access_token = g_strdup( access_token );
+
+ jabber_connect( ic );
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-27 22:37:06 +0000