diff --git a/src/or/connection.c b/src/or/connection.c index 6e3f8e6f64..cf3e9f3c5a 100644 --- a/src/or/connection.c +++ b/src/or/connection.c @@ -36,10 +36,6 @@ #include "router.h" #include "routerparse.h" -#ifdef USE_BUFFEREVENTS -#include -#endif - static connection_t *connection_create_listener( struct sockaddr *listensockaddr, socklen_t listensocklen, int type, @@ -381,7 +377,8 @@ _connection_free(connection_t *conn) "bytes on inbuf, %d on outbuf.", conn_type_to_string(conn->type), conn_state_to_string(conn->type, conn->state), - (int)buf_datalen(conn->inbuf), (int)buf_datalen(conn->outbuf)); + (int)connection_get_inbuf_len(conn), + (int)connection_get_outbuf_len(conn)); } if (!connection_is_listener(conn)) { diff --git a/src/or/connection.h b/src/or/connection.h index f38927e788..563b48cd86 100644 --- a/src/or/connection.h +++ b/src/or/connection.h @@ -12,6 +12,11 @@ #ifndef _TOR_CONNECTION_H #define _TOR_CONNECTION_H +#ifndef USE_BUFFEREVENTS +/* XXXX For buf_datalen in inline function */ +#include "buffers.h" +#endif + const char *conn_type_to_string(int type); const char *conn_state_to_string(int type, int state); @@ -73,6 +78,29 @@ connection_write_to_buf_zlib(const char *string, size_t len, _connection_write_to_buf_impl(string, len, TO_CONN(conn), done ? -1 : 1); } +static size_t connection_get_inbuf_len(connection_t *conn); +static size_t connection_get_outbuf_len(connection_t *conn); + +static INLINE size_t +connection_get_inbuf_len(connection_t *conn) +{ + IF_HAS_BUFFEREVENT(conn, { + return evbuffer_get_length(bufferevent_get_input(conn->bufev)); + }) ELSE_IF_NO_BUFFEREVENT { + return buf_datalen(conn->inbuf); + } +} + +static INLINE size_t +connection_get_outbuf_len(connection_t *conn) +{ + IF_HAS_BUFFEREVENT(conn, { + return evbuffer_get_length(bufferevent_get_output(conn->bufev)); + }) ELSE_IF_NO_BUFFEREVENT { + return buf_datalen(conn->outbuf); + } +} + connection_t *connection_get_by_global_id(uint64_t id); connection_t *connection_get_by_type(int type); diff --git a/src/or/connection_edge.c b/src/or/connection_edge.c index 6a3a5ef0a9..c72d1b9ba2 100644 --- a/src/or/connection_edge.c +++ b/src/or/connection_edge.c @@ -100,7 +100,7 @@ _connection_mark_unattached_ap(edge_connection_t *conn, int endreason, int connection_edge_reached_eof(edge_connection_t *conn) { - if (buf_datalen(conn->_base.inbuf) && + if (connection_get_inbuf_len(TO_CONN(conn)) && connection_state_is_open(TO_CONN(conn))) { /* it still has stuff to process. don't let it die yet. */ return 0; diff --git a/src/or/connection_or.c b/src/or/connection_or.c index 6b648b124d..cb2c429e9a 100644 --- a/src/or/connection_or.c +++ b/src/or/connection_or.c @@ -248,7 +248,7 @@ connection_or_process_inbuf(or_connection_t *conn) int connection_or_flushed_some(or_connection_t *conn) { - size_t datalen = buf_datalen(conn->_base.outbuf); + size_t datalen = connection_get_outbuf_len(TO_CONN(conn)); /* If we're under the low water mark, add cells until we're just over the * high water mark. */ if (datalen < OR_CONN_LOWWATER) { @@ -1277,7 +1277,7 @@ connection_or_process_cells_from_inbuf(or_connection_t *conn) while (1) { log_debug(LD_OR, "%d: starting, inbuf_datalen %d (%d pending in tls object).", - conn->_base.s,(int)buf_datalen(conn->_base.inbuf), + conn->_base.s,(int)connection_get_inbuf_len(TO_CONN(conn)), tor_tls_get_pending_bytes(conn->tls)); if (connection_fetch_var_cell_from_buf(conn, &var_cell)) { if (!var_cell) @@ -1288,8 +1288,8 @@ connection_or_process_cells_from_inbuf(or_connection_t *conn) } else { char buf[CELL_NETWORK_SIZE]; cell_t cell; - if (buf_datalen(conn->_base.inbuf) < CELL_NETWORK_SIZE) /* whole response - available? */ + if (connection_get_inbuf_len(TO_CONN(conn)) + < CELL_NETWORK_SIZE) /* whole response available? */ return 0; /* not yet */ circuit_build_times_network_is_live(&circ_times); diff --git a/src/or/cpuworker.c b/src/or/cpuworker.c index 6f943d78b8..07a1c2fb06 100644 --- a/src/or/cpuworker.c +++ b/src/or/cpuworker.c @@ -141,7 +141,7 @@ connection_cpu_process_inbuf(connection_t *conn) tor_assert(conn); tor_assert(conn->type == CONN_TYPE_CPUWORKER); - if (!buf_datalen(conn->inbuf)) + if (!connection_get_inbuf_len(conn)) return 0; if (conn->state == CPUWORKER_STATE_BUSY_ONION) { diff --git a/src/or/directory.c b/src/or/directory.c index b109cb53a7..7f8d1167b3 100644 --- a/src/or/directory.c +++ b/src/or/directory.c @@ -2134,7 +2134,7 @@ connection_dir_process_inbuf(dir_connection_t *conn) return 0; } - if (buf_datalen(conn->_base.inbuf) > MAX_DIRECTORY_OBJECT_SIZE) { + if (connection_get_inbuf_len(TO_CONN(conn)) > MAX_DIRECTORY_OBJECT_SIZE) { log_warn(LD_HTTP, "Too much data received from directory connection: " "denial of service attempt, or you need to upgrade?"); connection_mark_for_close(TO_CONN(conn)); diff --git a/src/or/dirserv.c b/src/or/dirserv.c index 3fcf1783d7..397b1c1d25 100644 --- a/src/or/dirserv.c +++ b/src/or/dirserv.c @@ -3389,7 +3389,7 @@ connection_dirserv_add_servers_to_outbuf(dir_connection_t *conn) time_t publish_cutoff = time(NULL)-ROUTER_MAX_AGE_TO_PUBLISH; while (smartlist_len(conn->fingerprint_stack) && - buf_datalen(conn->_base.outbuf) < DIRSERV_BUFFER_MIN) { + connection_get_outbuf_len(TO_CONN(conn)) < DIRSERV_BUFFER_MIN) { const char *body; char *fp = smartlist_pop_last(conn->fingerprint_stack); signed_descriptor_t *sd = NULL; @@ -3489,7 +3489,7 @@ connection_dirserv_add_dir_bytes_to_outbuf(dir_connection_t *conn) ssize_t bytes; int64_t remaining; - bytes = DIRSERV_BUFFER_MIN - buf_datalen(conn->_base.outbuf); + bytes = DIRSERV_BUFFER_MIN - connection_get_outbuf_len(TO_CONN(conn)); tor_assert(bytes > 0); tor_assert(conn->cached_dir); if (bytes < 8192) @@ -3528,7 +3528,7 @@ static int connection_dirserv_add_networkstatus_bytes_to_outbuf(dir_connection_t *conn) { - while (buf_datalen(conn->_base.outbuf) < DIRSERV_BUFFER_MIN) { + while (connection_get_outbuf_len(TO_CONN(conn)) < DIRSERV_BUFFER_MIN) { if (conn->cached_dir) { int uncompressing = (conn->zlib_state != NULL); int r = connection_dirserv_add_dir_bytes_to_outbuf(conn); @@ -3574,7 +3574,7 @@ connection_dirserv_flushed_some(dir_connection_t *conn) { tor_assert(conn->_base.state == DIR_CONN_STATE_SERVER_WRITING); - if (buf_datalen(conn->_base.outbuf) >= DIRSERV_BUFFER_MIN) + if (connection_get_outbuf_len(TO_CONN(conn)) >= DIRSERV_BUFFER_MIN) return 0; switch (conn->dir_spool_src) { diff --git a/src/or/main.c b/src/or/main.c index a9dfecb038..54c78c32dc 100644 --- a/src/or/main.c +++ b/src/or/main.c @@ -662,8 +662,8 @@ conn_close_if_marked(int i) } log_debug(LD_GENERAL, "Flushed last %d bytes from a linked conn; " "%d left; flushlen %d; wants-to-flush==%d", retval, - (int)buf_datalen(conn->outbuf), - (int)conn->outbuf_flushlen, + (int)connection_get_outbuf_len(conn), + (int)conn->outbuf_flushlen, connection_wants_to_flush(conn)); } else if (connection_speaks_cells(conn)) { if (conn->state == OR_CONN_STATE_OPEN) { @@ -700,7 +700,7 @@ conn_close_if_marked(int i) "something is wrong with your network connection, or " "something is wrong with theirs. " "(fd %d, type %s, state %d, marked at %s:%d).", - (int)buf_datalen(conn->outbuf), + (int)connection_get_outbuf_len(conn), escaped_safe_str_client(conn->address), conn->s, conn_type_to_string(conn->type), conn->state, conn->marked_for_close_file, @@ -793,7 +793,8 @@ run_connection_housekeeping(int i, time_t now) int past_keepalive = now >= conn->timestamp_lastwritten + options->KeepalivePeriod; - if (conn->outbuf && !buf_datalen(conn->outbuf) && conn->type == CONN_TYPE_OR) + if (conn->outbuf && !connection_get_outbuf_len(conn) && + conn->type == CONN_TYPE_OR) TO_OR_CONN(conn)->timestamp_lastempty = now; if (conn->marked_for_close) { @@ -813,7 +814,7 @@ run_connection_housekeeping(int i, time_t now) /* This check is temporary; it's to let us know whether we should consider * parsing partial serverdesc responses. */ if (conn->purpose == DIR_PURPOSE_FETCH_SERVERDESC && - buf_datalen(conn->inbuf)>=1024) { + connection_get_inbuf_len(conn) >= 1024) { log_info(LD_DIR,"Trying to extract information from wedged server desc " "download."); connection_dir_reached_eof(TO_DIR_CONN(conn)); @@ -852,7 +853,7 @@ run_connection_housekeeping(int i, time_t now) connection_mark_for_close(conn); } } else if (we_are_hibernating() && !or_conn->n_circuits && - !buf_datalen(conn->outbuf)) { + !connection_get_outbuf_len(conn)) { /* We're hibernating, there's no circuits, and nothing to flush.*/ log_info(LD_OR,"Expiring non-used OR connection to fd %d (%s:%d) " "[Hibernating or exiting].", @@ -874,10 +875,10 @@ run_connection_housekeeping(int i, time_t now) "Expiring stuck OR connection to fd %d (%s:%d). (%d bytes to " "flush; %d seconds since last write)", conn->s, conn->address, conn->port, - (int)buf_datalen(conn->outbuf), + (int)connection_get_outbuf_len(conn), (int)(now-conn->timestamp_lastwritten)); connection_mark_for_close(conn); - } else if (past_keepalive && !buf_datalen(conn->outbuf)) { + } else if (past_keepalive && !connection_get_outbuf_len(conn)) { /* send a padding cell */ log_fn(LOG_DEBUG,LD_OR,"Sending keepalive to (%s:%d)", conn->address, conn->port); @@ -1768,13 +1769,13 @@ dumpstats(int severity) log(severity,LD_GENERAL, "Conn %d: %d bytes waiting on inbuf (len %d, last read %d secs ago)", i, - (int)buf_datalen(conn->inbuf), + (int)connection_get_inbuf_len(conn), (int)buf_allocation(conn->inbuf), (int)(now - conn->timestamp_lastread)); log(severity,LD_GENERAL, "Conn %d: %d bytes waiting on outbuf " "(len %d, last written %d secs ago)",i, - (int)buf_datalen(conn->outbuf), + (int)connection_get_outbuf_len(conn), (int)buf_allocation(conn->outbuf), (int)(now - conn->timestamp_lastwritten)); if (conn->type == CONN_TYPE_OR) { diff --git a/src/or/or.h b/src/or/or.h index a699685c4a..0246da8ca3 100644 --- a/src/or/or.h +++ b/src/or/or.h @@ -83,6 +83,12 @@ #define snprintf _snprintf #endif +#ifdef USE_BUFFEREVENTS +#include +#include +#endif + +#include "crypto.h" #include "tortls.h" #include "../common/torlog.h" #include "container.h" @@ -1270,17 +1276,45 @@ static INLINE control_connection_t *TO_CONTROL_CONN(connection_t *c) return DOWNCAST(control_connection_t, c); } +/* Conditional macros to help write code that works whether bufferevents are + disabled or not. + + We can't just write: + if (conn->bufev) { + do bufferevent stuff; + } else { + do other stuff; + } + because the bufferevent stuff won't even compile unless we have a fairly + new version of Libevent. Instead, we say: + IF_HAS_BUFFEREVENT(conn, { do_bufferevent_stuff } ); + or: + IF_HAS_BUFFEREVENT(conn, { + do bufferevent stuff; + }) ELSE_IF_NO_BUFFEREVENT { + do non-bufferevent stuff; + } + If we're compiling with bufferevent support, then the macros expand more or + less to: + if (conn->bufev) { + do_bufferevent_stuff; + } else { + do non-bufferevent stuff; + } + and if we aren't using bufferevents, they expand more or less to: + { do non-bufferevent stuff; } +*/ #ifdef USE_BUFFEREVENTS #define HAS_BUFFEREVENT(c) (((c)->bufev) != NULL) -#define IF_HAS_BUFFEREVENT(c, stmt) \ - do { \ - if ((conn)->bufev) do { \ - stmt ; \ - } while(0); \ +#define IF_HAS_BUFFEREVENT(c, stmt) \ + if ((c)->bufev) do { \ + stmt ; \ } while (0) +#define ELSE_IF_NO_BUFFEREVENT ; else #else #define HAS_BUFFEREVENT(c) (0) #define IF_HAS_BUFFEREVENT(c, stmt) (void)0 +#define ELSE_IF_NO_BUFFEREVENT ; #endif /** What action type does an address policy indicate: accept or reject? */ diff --git a/src/or/relay.c b/src/or/relay.c index 480a291037..16048fa8c7 100644 --- a/src/or/relay.c +++ b/src/or/relay.c @@ -1365,7 +1365,7 @@ connection_edge_package_raw_inbuf(edge_connection_t *conn, int package_partial, return 0; } - amount_to_process = buf_datalen(conn->_base.inbuf); + amount_to_process = connection_get_inbuf_len(TO_CONN(conn)); if (!amount_to_process) return 0; @@ -1384,7 +1384,7 @@ connection_edge_package_raw_inbuf(edge_connection_t *conn, int package_partial, connection_fetch_from_buf(payload, length, TO_CONN(conn)); log_debug(domain,"(%d) Packaging %d bytes (%d waiting).", conn->_base.s, - (int)length, (int)buf_datalen(conn->_base.inbuf)); + (int)length, (int)connection_get_inbuf_len(TO_CONN(conn))); if (connection_edge_send_command(conn, RELAY_COMMAND_DATA, payload, length) < 0 ) @@ -2415,7 +2415,7 @@ append_cell_to_circuit_queue(circuit_t *circ, or_connection_t *orconn, make_circuit_active_on_conn(circ, orconn); } - if (! buf_datalen(orconn->_base.outbuf)) { + if (! connection_get_outbuf_len(TO_CONN(orconn))) { /* There is no data at all waiting to be sent on the outbuf. Add a * cell, so that we can notice when it gets flushed, flushed_some can * get called, and we can start putting more data onto the buffer then.