diff options
Diffstat (limited to 'src/core/or/channel.h')
| -rw-r--r-- | src/core/or/channel.h | 89 |
1 files changed, 42 insertions, 47 deletions
diff --git a/src/core/or/channel.h b/src/core/or/channel.h index d41f0d70bb..fa4ce4f703 100644 --- a/src/core/or/channel.h +++ b/src/core/or/channel.h @@ -1,4 +1,4 @@ -/* * Copyright (c) 2012-2019, The Tor Project, Inc. */ +/* * Copyright (c) 2012-2020, The Tor Project, Inc. */ /* See LICENSE for licensing information */ /** @@ -14,6 +14,7 @@ #include "lib/container/handles.h" #include "lib/crypt_ops/crypto_ed25519.h" +#include "ext/ht.h" #include "tor_queue.h" #define tor_timer_t timeout @@ -22,7 +23,6 @@ struct tor_timer_t; /* Channel handler function pointer typedefs */ typedef void (*channel_listener_fn_ptr)(channel_listener_t *, channel_t *); typedef void (*channel_cell_handler_fn_ptr)(channel_t *, cell_t *); -typedef void (*channel_var_cell_handler_fn_ptr)(channel_t *, var_cell_t *); /** * This enum is used by channelpadding to decide when to pad channels. @@ -48,7 +48,7 @@ typedef enum { /* channel states for channel_t */ typedef enum { - /* + /** * Closed state - channel is inactive * * Permitted transitions from: @@ -57,7 +57,7 @@ typedef enum { * - CHANNEL_STATE_OPENING */ CHANNEL_STATE_CLOSED = 0, - /* + /** * Opening state - channel is trying to connect * * Permitted transitions from: @@ -68,7 +68,7 @@ typedef enum { * - CHANNEL_STATE_OPEN */ CHANNEL_STATE_OPENING, - /* + /** * Open state - channel is active and ready for use * * Permitted transitions from: @@ -80,7 +80,7 @@ typedef enum { * - CHANNEL_STATE_MAINT */ CHANNEL_STATE_OPEN, - /* + /** * Maintenance state - channel is temporarily offline for subclass specific * maintenance activities such as TLS renegotiation. * @@ -92,7 +92,7 @@ typedef enum { * - CHANNEL_STATE_OPEN */ CHANNEL_STATE_MAINT, - /* + /** * Closing state - channel is shutting down * * Permitted transitions from: @@ -103,7 +103,7 @@ typedef enum { * - CHANNEL_STATE_ERROR */ CHANNEL_STATE_CLOSING, - /* + /** * Error state - channel has experienced a permanent error * * Permitted transitions from: @@ -115,7 +115,7 @@ typedef enum { * - None */ CHANNEL_STATE_ERROR, - /* + /** * Placeholder for maximum state value */ CHANNEL_STATE_LAST @@ -124,7 +124,7 @@ typedef enum { /* channel listener states for channel_listener_t */ typedef enum { - /* + /** * Closed state - channel listener is inactive * * Permitted transitions from: @@ -133,7 +133,7 @@ typedef enum { * - CHANNEL_LISTENER_STATE_LISTENING */ CHANNEL_LISTENER_STATE_CLOSED = 0, - /* + /** * Listening state - channel listener is listening for incoming * connections * @@ -144,7 +144,7 @@ typedef enum { * - CHANNEL_LISTENER_STATE_ERROR */ CHANNEL_LISTENER_STATE_LISTENING, - /* + /** * Closing state - channel listener is shutting down * * Permitted transitions from: @@ -154,7 +154,7 @@ typedef enum { * - CHANNEL_LISTENER_STATE_ERROR */ CHANNEL_LISTENER_STATE_CLOSING, - /* + /** * Error state - channel listener has experienced a permanent error * * Permitted transitions from: @@ -164,7 +164,7 @@ typedef enum { * - None */ CHANNEL_LISTENER_STATE_ERROR, - /* + /** * Placeholder for maximum state value */ CHANNEL_LISTENER_STATE_LAST @@ -178,15 +178,15 @@ typedef enum { * to a particular node, and once constructed support the abstract operations * defined below. */ -struct channel_s { +struct channel_t { /** Magic number for type-checking cast macros */ uint32_t magic; /** List entry for hashtable for global-identifier lookup. */ - HT_ENTRY(channel_s) gidmap_node; + HT_ENTRY(channel_t) gidmap_node; /** Handle entry for handle-based lookup */ - HANDLE_ENTRY(channel, channel_s); + HANDLE_ENTRY(channel, channel_t); /** Current channel state */ channel_state_t state; @@ -267,21 +267,21 @@ struct channel_s { /** State variable for use by the scheduler */ enum { - /* + /** * The channel is not open, or it has a full output buffer but no queued * cells. */ SCHED_CHAN_IDLE = 0, - /* + /** * The channel has space on its output buffer to write, but no queued * cells. */ SCHED_CHAN_WAITING_FOR_CELLS, - /* + /** * The scheduler has queued cells but no output buffer space to write. */ SCHED_CHAN_WAITING_TO_WRITE, - /* + /** * The scheduler has both queued cells and output buffer space, and is * eligible for the scheduler loop. */ @@ -320,7 +320,6 @@ struct channel_s { /** Registered handlers for incoming cells */ channel_cell_handler_fn_ptr cell_handler; - channel_var_cell_handler_fn_ptr var_cell_handler; /* Methods implemented by the lower layer */ @@ -395,7 +394,7 @@ struct channel_s { * Linked list of channels with the same RSA identity digest, for use with * the digest->channel map */ - TOR_LIST_ENTRY(channel_s) next_with_same_id; + TOR_LIST_ENTRY(channel_t) next_with_same_id; /** Circuit mux for circuits sending on this channel */ circuitmux_t *cmux; @@ -442,9 +441,9 @@ struct channel_s { ratelim_t last_warned_circ_ids_exhausted; /** Channel timestamps for cell channels */ - time_t timestamp_client; /* Client used this, according to relay.c */ - time_t timestamp_recv; /* Cell received from lower layer */ - time_t timestamp_xmit; /* Cell sent to lower layer */ + time_t timestamp_client; /*(< Client used this, according to relay.c */ + time_t timestamp_recv; /**< Cell received from lower layer */ + time_t timestamp_xmit; /**< Cell sent to lower layer */ /** Timestamp for run_connection_housekeeping(). We update this once a * second when we run housekeeping and find a circuit on this channel, and @@ -456,16 +455,17 @@ struct channel_s { * distinct namespace. */ uint64_t dirreq_id; - /** Channel counters for cell channels */ + /** Channel counters for cells and bytes we have received. */ uint64_t n_cells_recved, n_bytes_recved; + /** Channel counters for cells and bytes we have sent. */ uint64_t n_cells_xmitted, n_bytes_xmitted; }; -struct channel_listener_s { - /* Current channel listener state */ +struct channel_listener_t { + /** Current channel listener state */ channel_listener_state_t state; - /* Globally unique ID number for a channel over the lifetime of a Tor + /** Globally unique ID number for a channel over the lifetime of a Tor * process. */ uint64_t global_identifier; @@ -539,13 +539,8 @@ void channel_listener_set_listener_fn(channel_listener_t *chan, /* Incoming cell callbacks */ channel_cell_handler_fn_ptr channel_get_cell_handler(channel_t *chan); -channel_var_cell_handler_fn_ptr -channel_get_var_cell_handler(channel_t *chan); - void channel_set_cell_handlers(channel_t *chan, - channel_cell_handler_fn_ptr cell_handler, - channel_var_cell_handler_fn_ptr - var_cell_handler); + channel_cell_handler_fn_ptr cell_handler); /* Clean up closed channels and channel listeners periodically; these are * called from run_scheduled_events() in main.c. @@ -560,13 +555,13 @@ void channel_free_all(void); void channel_dumpstats(int severity); void channel_listener_dumpstats(int severity); -#ifdef TOR_CHANNEL_INTERNAL_ +#ifdef CHANNEL_OBJECT_PRIVATE -#ifdef CHANNEL_PRIVATE_ +#ifdef CHANNEL_FILE_PRIVATE STATIC void channel_add_to_digest_map(channel_t *chan); -#endif /* defined(CHANNEL_PRIVATE_) */ +#endif /* defined(CHANNEL_FILE_PRIVATE) */ /* Channel operations for subclasses and internal use only */ @@ -645,7 +640,7 @@ void channel_notify_flushed(channel_t *chan); /* Handle stuff we need to do on open like notifying circuits */ void channel_do_open_actions(channel_t *chan); -#endif /* defined(TOR_CHANNEL_INTERNAL_) */ +#endif /* defined(CHANNEL_OBJECT_PRIVATE) */ /* Helper functions to perform operations on channels */ @@ -661,11 +656,13 @@ channel_t * channel_connect(const tor_addr_t *addr, uint16_t port, const char *rsa_id_digest, const struct ed25519_public_key_t *ed_id); -channel_t * channel_get_for_extend(const char *rsa_id_digest, +MOCK_DECL(channel_t *, channel_get_for_extend,( + const char *rsa_id_digest, const struct ed25519_public_key_t *ed_id, - const tor_addr_t *target_addr, + const tor_addr_t *target_ipv4_addr, + const tor_addr_t *target_ipv6_addr, const char **msg_out, - int *launch_out); + int *launch_out)); /* Ask which of two channels is better for circuit-extension purposes */ int channel_is_better(channel_t *a, channel_t *b); @@ -726,7 +723,7 @@ const char * channel_get_actual_remote_descr(channel_t *chan); const char * channel_get_actual_remote_address(channel_t *chan); MOCK_DECL(int, channel_get_addr_if_possible, (channel_t *chan, tor_addr_t *addr_out)); -const char * channel_get_canonical_remote_descr(channel_t *chan); +MOCK_DECL(const char *, channel_get_canonical_remote_descr,(channel_t *chan)); int channel_has_queued_writes(channel_t *chan); int channel_is_bad_for_new_circs(channel_t *chan); void channel_mark_bad_for_new_circs(channel_t *chan); @@ -741,8 +738,6 @@ int channel_matches_extend_info(channel_t *chan, extend_info_t *extend_info); int channel_remote_identity_matches(const channel_t *chan, const char *rsa_id_digest, const ed25519_public_key_t *ed_id); -int channel_matches_target_addr_for_extend(channel_t *chan, - const tor_addr_t *target); unsigned int channel_num_circuits(channel_t *chan); MOCK_DECL(void,channel_set_circid_type,(channel_t *chan, crypto_pk_t *identity_rcvd, @@ -772,7 +767,7 @@ int packed_cell_is_destroy(channel_t *chan, circid_t *circid_out); /* Declare the handle helpers */ -HANDLE_DECL(channel, channel_s,) +HANDLE_DECL(channel, channel_t,) #define channel_handle_free(h) \ FREE_AND_NULL(channel_handle_t, channel_handle_free_, (h)) #undef tor_timer_t |