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[torspec/master] Merge branch 'feature3049-squashed'
by nickm＠torproject.org 23 May '11

23 May '11

commit 75aae8d19a898ff71ef532024cac81592bccd43d Merge: 757f6dc b91918e Author: Nick Mathewson <nickm(a)torproject.org> Date: Mon May 23 01:25:03 2011 -0400 Merge branch 'feature3049-squashed' control-spec.txt | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 55 insertions(+), 0 deletions(-)

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[tor/master] Fix comment typo
by nickm＠torproject.org 23 May '11

23 May '11

commit 86aeb152cab3d0c9d5d8b301e5eb5e3afe497ea9 Author: Robert Ransom <rransom.8774(a)gmail.com> Date: Wed May 18 04:35:20 2011 -0700 Fix comment typo --- src/or/or.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/or/or.h b/src/or/or.h index 546c38a..52da63a 100644 --- a/src/or/or.h +++ b/src/or/or.h @@ -1009,7 +1009,7 @@ typedef struct connection_t { /* XXXX023 move this field, and all the listener-only fields (just socket_family, I think), into a new listener_connection_t subtype. */ /** If the connection is a CONN_TYPE_AP_DNS_LISTENER, this field points - * to the evdns_server_port is uses to listen to and answer connections. */ + * to the evdns_server_port it uses to listen to and answer connections. */ struct evdns_server_port *dns_server_port; /** Unique ID for measuring tunneled network status requests. */

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[tor/master] Split control connection cleanup out of connection_free
by nickm＠torproject.org 23 May '11

23 May '11

commit 338a0266101e3addecbaf5771f62a860244896b3 Author: Robert Ransom <rransom.8774(a)gmail.com> Date: Thu May 19 16:27:51 2011 -0700 Split control connection cleanup out of connection_free --- src/or/connection.c | 3 +-- src/or/control.c | 10 ++++++++++ src/or/control.h | 2 ++ 3 files changed, 13 insertions(+), 2 deletions(-) diff --git a/src/or/connection.c b/src/or/connection.c index fc2097f..24ab593 100644 --- a/src/or/connection.c +++ b/src/or/connection.c @@ -479,8 +479,7 @@ connection_free(connection_t *conn) } } if (conn->type == CONN_TYPE_CONTROL) { - TO_CONTROL_CONN(conn)->event_mask = 0; - control_update_global_event_mask(); + connection_control_closed(TO_CONTROL_CONN(conn)); } connection_unregister_events(conn); _connection_free(conn); diff --git a/src/or/control.c b/src/or/control.c index 47e7081..0ddbee9 100644 --- a/src/or/control.c +++ b/src/or/control.c @@ -2739,6 +2739,16 @@ connection_control_reached_eof(control_connection_t *conn) return 0; } +/** Called when conn is being freed. */ +void +connection_control_closed(control_connection_t *conn) +{ + tor_assert(conn); + + conn->event_mask = 0; + control_update_global_event_mask(); +} + /** Return true iff cmd is allowable (or at least forgivable) at this * stage of the protocol. */ static int diff --git a/src/or/control.h b/src/or/control.h index a83e374..6694c96 100644 --- a/src/or/control.h +++ b/src/or/control.h @@ -25,6 +25,8 @@ void control_adjust_event_log_severity(void); int connection_control_finished_flushing(control_connection_t *conn); int connection_control_reached_eof(control_connection_t *conn); +void connection_control_closed(control_connection_t *conn); + int connection_control_process_inbuf(control_connection_t *conn); #define EVENT_AUTHDIR_NEWDESCS 0x000D

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[tor/master] Implement TAKEOWNERSHIP command
by nickm＠torproject.org 23 May '11

23 May '11

commit bb860cedb29be0d95740bcf50577ae96bf666a18 Author: Robert Ransom <rransom.8774(a)gmail.com> Date: Thu May 19 16:34:40 2011 -0700 Implement TAKEOWNERSHIP command --- src/or/control.c | 44 +++++++++++++++++++++++++++++++++++++++++++- src/or/or.h | 3 +++ 2 files changed, 46 insertions(+), 1 deletions(-) diff --git a/src/or/control.c b/src/or/control.c index 0ddbee9..b6f802d 100644 --- a/src/or/control.c +++ b/src/or/control.c @@ -1230,6 +1230,26 @@ handle_control_signal(control_connection_t *conn, uint32_t len, return 0; } +/** Called when we get a TAKEOWNERSHIP command. Mark this connection + * as an owning connection, so that we will exit if the connection + * closes. */ +static int +handle_control_takeownership(control_connection_t *conn, uint32_t len, + const char *body) +{ + (void)len; + (void)body; + + conn->is_owning_control_connection = 1; + + log_info(LD_CONTROL, "Control connection %d has taken ownership of this " + "Tor instance.", + (int)(conn->_base.s)); + + send_control_done(conn); + return 0; +} + /** Called when we get a MAPADDRESS command; try to bind all listed addresses, * and report success or failure. */ static int @@ -2747,6 +2767,25 @@ connection_control_closed(control_connection_t *conn) conn->event_mask = 0; control_update_global_event_mask(); + + if (conn->is_owning_control_connection) { + int shutdown_slowly = server_mode(get_options()); + + log_notice(LD_CONTROL, "Owning controller connection has closed -- %s.", + shutdown_slowly ? "shutting down" : "exiting now"); + + /* XXXX This chunk of code should be a separate function, called + * here, in owning_controller_procmon_cb, and by + * process_signal(SIGINT). */ + + if (!shutdown_slowly) { + tor_cleanup(); + exit(0); + } + /* XXXX This will close all listening sockets except control-port + * listeners. Perhaps we should close those too. */ + hibernate_begin_shutdown(); + } } /** Return true iff cmd is allowable (or at least forgivable) at this @@ -2932,6 +2971,9 @@ connection_control_process_inbuf(control_connection_t *conn) } else if (!strcasecmp(conn->incoming_cmd, "SIGNAL")) { if (handle_control_signal(conn, cmd_data_len, args)) return -1; + } else if (!strcasecmp(conn->incoming_cmd, "TAKEOWNERSHIP")) { + if (handle_control_takeownership(conn, cmd_data_len, args)) + return -1; } else if (!strcasecmp(conn->incoming_cmd, "MAPADDRESS")) { if (handle_control_mapaddress(conn, cmd_data_len, args)) return -1; @@ -3816,7 +3858,7 @@ owning_controller_procmon_cb(void *unused) shutdown_slowly ? "shutting down" : "exiting now"); /* XXXX This chunk of code should be a separate function, called - * here and by process_signal(SIGINT). */ + * here, in connection_control_closed, and by process_signal(SIGINT). */ if (!shutdown_slowly) { tor_cleanup(); diff --git a/src/or/or.h b/src/or/or.h index 52da63a..cbfe362 100644 --- a/src/or/or.h +++ b/src/or/or.h @@ -1242,6 +1242,9 @@ typedef struct control_connection_t { /** True if we have sent a protocolinfo reply on this connection. */ unsigned int have_sent_protocolinfo:1; + /** True if we have received a takeownership command on this + * connection. */ + unsigned int is_owning_control_connection:1; /** Amount of space allocated in incoming_cmd. */ uint32_t incoming_cmd_len;

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[tor/master] Add changes file for #3049
by nickm＠torproject.org 23 May '11

23 May '11

commit 76093af02ddd0d91225ec6ca064580f9d52fd644 Author: Robert Ransom <rransom.8774(a)gmail.com> Date: Thu May 19 16:45:09 2011 -0700 Add changes file for #3049 --- changes/feature3049 | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/changes/feature3049 b/changes/feature3049 new file mode 100644 index 0000000..7960a1f --- /dev/null +++ b/changes/feature3049 @@ -0,0 +1,6 @@ + o Major features: + - Add an __OwningControllerProcess configuration option and a + TAKEOWNERSHIP control-port command, so that a Tor controller can + ensure that when it exits, Tor will shut down. Implements + feature 3049. +

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[tor/master] finish a comment nickm started in 8ebceeb3
by nickm＠torproject.org 23 May '11

23 May '11

commit 6b54edef4f93748e8247067242aad7158e82a148 Author: Roger Dingledine <arma(a)torproject.org> Date: Sat May 21 18:34:55 2011 -0400 finish a comment nickm started in 8ebceeb3 --- src/or/router.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/src/or/router.c b/src/or/router.c index 0beb960..777441a 100644 --- a/src/or/router.c +++ b/src/or/router.c @@ -503,7 +503,8 @@ init_keys(void) if (!key_lock) key_lock = tor_mutex_new(); - /* There are a couple of paths that put us here before */ + /* There are a couple of paths that put us here before we've asked + * openssl to initialize itself. */ if (crypto_global_init(get_options()->HardwareAccel, get_options()->AccelName, get_options()->AccelDir)) {

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[tor/master] naked constants are ugly
by nickm＠torproject.org 23 May '11

23 May '11

commit 1ba1bdee4bd8f3c00e603fe9b0fd2f14eeb60466 Author: Roger Dingledine <arma(a)torproject.org> Date: Sat May 21 18:55:23 2011 -0400 naked constants are ugly --- src/or/router.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/src/or/router.c b/src/or/router.c index 777441a..184715b 100644 --- a/src/or/router.c +++ b/src/or/router.c @@ -490,8 +490,8 @@ init_keys(void) char fingerprint_line[MAX_NICKNAME_LEN+FINGERPRINT_LEN+3]; const char *mydesc; crypto_pk_env_t *prkey; - char digest[20]; - char v3_digest[20]; + char digest[DIGEST_LEN]; + char v3_digest[DIGEST_LEN]; char *cp; or_options_t *options = get_options(); authority_type_t type;

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[tor/master] Split out owning-controller-loss shutdown code into a function
by nickm＠torproject.org 23 May '11

23 May '11

commit 7b34e3a9659a0f992dc43a568c2ea8af57e9c6d3 Author: Robert Ransom <rransom.8774(a)gmail.com> Date: Fri May 20 08:21:11 2011 -0700 Split out owning-controller-loss shutdown code into a function --- src/or/control.c | 57 +++++++++++++++++++++++------------------------------ 1 files changed, 25 insertions(+), 32 deletions(-) diff --git a/src/or/control.c b/src/or/control.c index b6f802d..b7e9047 100644 --- a/src/or/control.c +++ b/src/or/control.c @@ -2759,6 +2759,29 @@ connection_control_reached_eof(control_connection_t *conn) return 0; } +/** Shut down this Tor instance in the same way that SIGINT would, but + * with a log message appropriate for the loss of an owning controller. */ +static void +lost_owning_controller(const char *owner_type, const char *loss_manner) +{ + int shutdown_slowly = server_mode(get_options()); + + log_notice(LD_CONTROL, "Owning controller %s has %s -- %s.", + owner_type, loss_manner, + shutdown_slowly ? "shutting down" : "exiting now"); + + /* XXXX Perhaps this chunk of code should be a separate function, + * called here and by process_signal(SIGINT). */ + + if (!shutdown_slowly) { + tor_cleanup(); + exit(0); + } + /* XXXX This will close all listening sockets except control-port + * listeners. Perhaps we should close those too. */ + hibernate_begin_shutdown(); +} + /** Called when conn is being freed. */ void connection_control_closed(control_connection_t *conn) @@ -2769,22 +2792,7 @@ connection_control_closed(control_connection_t *conn) control_update_global_event_mask(); if (conn->is_owning_control_connection) { - int shutdown_slowly = server_mode(get_options()); - - log_notice(LD_CONTROL, "Owning controller connection has closed -- %s.", - shutdown_slowly ? "shutting down" : "exiting now"); - - /* XXXX This chunk of code should be a separate function, called - * here, in owning_controller_procmon_cb, and by - * process_signal(SIGINT). */ - - if (!shutdown_slowly) { - tor_cleanup(); - exit(0); - } - /* XXXX This will close all listening sockets except control-port - * listeners. Perhaps we should close those too. */ - hibernate_begin_shutdown(); + lost_owning_controller("connection", "closed"); } } @@ -3849,24 +3857,9 @@ static tor_process_monitor_t *owning_controller_process_monitor = NULL; static void owning_controller_procmon_cb(void *unused) { - int shutdown_slowly = server_mode(get_options()); - (void)unused; - log_notice(LD_CONTROL, "Owning controller process has vanished -- " - "%s.", - shutdown_slowly ? "shutting down" : "exiting now"); - - /* XXXX This chunk of code should be a separate function, called - * here, in connection_control_closed, and by process_signal(SIGINT). */ - - if (!shutdown_slowly) { - tor_cleanup(); - exit(0); - } - /* XXXX This will close all listening sockets except control-port - * listeners. Perhaps we should close those too. */ - hibernate_begin_shutdown(); + lost_owning_controller("process", "vanished"); } /** Set process_spec as Tor's owning controller process.

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[tor/master] Merge branch 'feature3049-v2' into maint-0.2.2
by nickm＠torproject.org 23 May '11

23 May '11

commit b80a8bba199b9adfb9c893641ba770566fa548e1 Merge: 1ba1bde 1e69c60 Author: Nick Mathewson <nickm(a)torproject.org> Date: Mon May 23 01:19:04 2011 -0400 Merge branch 'feature3049-v2' into maint-0.2.2 Conflicts: src/common/Makefile.am changes/exit-policy-default-is-not-a-prefix | 5 + changes/feature3049 | 6 + src/common/Makefile.am | 4 +- src/common/compat.h | 2 +- src/common/compat_libevent.c | 2 +- src/common/log.c | 2 +- src/common/procmon.c | 332 +++++++++++++++++++++++++++ src/common/procmon.h | 30 +++ src/common/torlog.h | 1 - src/common/util.c | 18 +- src/or/config.c | 15 ++ src/or/connection.c | 3 +- src/or/control.c | 138 +++++++++++- src/or/control.h | 4 + src/or/or.h | 10 +- 15 files changed, 554 insertions(+), 18 deletions(-) diff --cc src/common/Makefile.am index 2d009bd,8889245..6952591 --- a/src/common/Makefile.am +++ b/src/common/Makefile.am @@@ -12,11 -12,11 +12,11 @@@ libor_extra_source endif libor_a_SOURCES = address.c log.c util.c compat.c container.c mempool.c \ - memarea.c di_ops.c util_codedigest.c $(libor_extra_source) - memarea.c util_codedigest.c procmon.c $(libor_extra_source) ++ memarea.c di_ops.c procmon.c util_codedigest.c $(libor_extra_source) libor_crypto_a_SOURCES = crypto.c aes.c tortls.c torgzip.c libor_event_a_SOURCES = compat_libevent.c - noinst_HEADERS = address.h torlog.h crypto.h util.h compat.h aes.h torint.h tortls.h strlcpy.c strlcat.c torgzip.h container.h ht.h mempool.h memarea.h ciphers.inc compat_libevent.h tortls_states.h di_ops.h -noinst_HEADERS = address.h torlog.h crypto.h util.h compat.h aes.h torint.h tortls.h strlcpy.c strlcat.c torgzip.h container.h ht.h mempool.h memarea.h procmon.h ciphers.inc compat_libevent.h tortls_states.h ++noinst_HEADERS = address.h torlog.h crypto.h util.h compat.h aes.h torint.h tortls.h strlcpy.c strlcat.c torgzip.h container.h ht.h mempool.h memarea.h ciphers.inc compat_libevent.h tortls_states.h di_ops.h procmon.h common_sha1.i: $(libor_SOURCES) $(libor_crypto_a_SOURCES) $(noinst_HEADERS) if test "@SHA1SUM@" != none; then \

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[tor/master] The first argument for a libevent callback should be evutil_socket_t
by nickm＠torproject.org 23 May '11

23 May '11

commit 1e69c60dccc358a7146c2b5e7825ea729498b41b Author: Nick Mathewson <nickm(a)torproject.org> Date: Mon May 23 01:12:00 2011 -0400 The first argument for a libevent callback should be evutil_socket_t --- src/common/procmon.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/src/common/procmon.c b/src/common/procmon.c index cee956a..bd25bc1 100644 --- a/src/common/procmon.c +++ b/src/common/procmon.c @@ -34,7 +34,7 @@ typedef int pid_t; /* Currently we need to poll in some way on all systems. */ #ifdef PROCMON_POLLS -static void tor_process_monitor_poll_cb(int unused1, short unused2, +static void tor_process_monitor_poll_cb(evutil_socket_t unused1, short unused2, void *procmon_); #endif @@ -232,7 +232,8 @@ tor_process_monitor_new(struct event_base *base, /** Libevent callback to poll for the existence of the process * monitored by procmon_. */ static void -tor_process_monitor_poll_cb(int unused1, short unused2, void *procmon_) +tor_process_monitor_poll_cb(evutil_socket_t unused1, short unused2, + void *procmon_) { tor_process_monitor_t *procmon = (tor_process_monitor_t *)(procmon_); int its_dead_jim;

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