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work around a tsocks bug

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when an AP connection dies early, be sure to do a socks reject
for it. if you just hang up, tsocks goes into an infinite loop.


svn:r1352
This commit is contained in:
Roger Dingledine 2004-03-27 05:45:52 +00:00
parent 9ab5f3c067
commit 56dfc3151f
3 changed files with 24 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
src/or/connection.c
View File

@ -199,8 +199,14 @@ _connection_mark_for_close(connection_t *conn, char reason)
}
/* No special processing needed. */
break;
case CONN_TYPE_EXIT:
case CONN_TYPE_AP:
if (conn->socks_request->has_finished == 0) {
log_fn(LOG_INFO,"Cleaning up AP -- sending socks reject.");
connection_ap_handshake_socks_reply(conn, NULL, 0, 0);
conn->socks_request->has_finished = 1;
}
/* fall through, to do things for both ap and exit */
case CONN_TYPE_EXIT:
if (conn->state == EXIT_CONN_STATE_RESOLVING)
connection_dns_remove(conn);
if (!conn->has_sent_end && reason &&
@ -1004,13 +1010,16 @@ void assert_connection_ok(connection_t *conn, time_t now)
assert(!conn->done_sending);
assert(!conn->done_receiving);
} else {
if(conn->type == CONN_TYPE_AP && conn->state == AP_CONN_STATE_OPEN)
assert(conn->cpath_layer);
if(conn->cpath_layer)
assert_cpath_layer_ok(conn->cpath_layer);
/* XXX unchecked: package window, deliver window. */
}
if (conn->type != CONN_TYPE_AP) {
if (conn->type == CONN_TYPE_AP) {
assert(conn->socks_request);
if (conn->state == AP_CONN_STATE_OPEN) {
assert(conn->socks_request->has_finished);
assert(conn->cpath_layer);
assert_cpath_layer_ok(conn->cpath_layer);
}
} else {
assert(!conn->socks_request);
}

7
src/or/connection_edge.c
View File

@ -12,8 +12,6 @@ static int connection_ap_handshake_process_socks(connection_t *conn);
static int connection_ap_handshake_attach_circuit(connection_t *conn);
static int connection_ap_handshake_attach_circuit_helper(connection_t *conn);
static void connection_ap_handshake_send_begin(connection_t *ap_conn, circuit_t *circ);
static void connection_ap_handshake_socks_reply(connection_t *conn, char *reply,
int replylen, char success);
static int connection_exit_begin_conn(cell_t *cell, circuit_t *circ);
static void connection_edge_consider_sending_sendme(connection_t *conn);
@ -284,6 +282,7 @@ int connection_edge_process_relay_cell(cell_t *cell, circuit_t *circ, connection
(int)(time(NULL) - conn->timestamp_lastread));
circuit_log_path(LOG_INFO,circ);
connection_ap_handshake_socks_reply(conn, NULL, 0, 1);
conn->socks_request->has_finished = 1;
return 0;
} else {
log_fn(LOG_WARN,"Got an unexpected relay command %d, in state %d (%s). Closing.",
@ -704,6 +703,8 @@ static int connection_ap_handshake_process_socks(connection_t *conn) {
} else {
log_fn(LOG_DEBUG,"socks handshake not all here yet.");
}
if (sockshere == -1)
conn->socks_request->has_finished = 1;
return sockshere;
} /* else socks handshake is done, continue processing */
@ -848,7 +849,7 @@ static void connection_ap_handshake_send_begin(connection_t *ap_conn, circuit_t
return;
}
static void connection_ap_handshake_socks_reply(connection_t *conn, char *reply,
void connection_ap_handshake_socks_reply(connection_t *conn, char *reply,
int replylen, char success) {
char buf[256];

4
src/or/or.h
View File

@ -554,6 +554,7 @@ struct socks_request_t {
char socks_version;
int replylen;
char reply[MAX_SOCKS_REPLY_LEN];
int has_finished; /* has the socks handshake finished? */
char address[MAX_SOCKS_ADDR_LEN];
uint16_t port;
};
@ -750,6 +751,9 @@ int connection_edge_finished_flushing(connection_t *conn);
int connection_edge_package_raw_inbuf(connection_t *conn);
void connection_ap_handshake_socks_reply(connection_t *conn, char *reply,
int replylen, char success);
void connection_exit_connect(connection_t *conn);
int connection_ap_can_use_exit(connection_t *conn, routerinfo_t *exit);
void connection_ap_expire_beginning(void);