commit ce147a2a9a0e399943362062b1fbccecac36aa99 Author: Andrea Shepard andrea@torproject.org Date: Fri May 31 15:35:51 2013 -0700

When launching a resolve request on behalf of an AF_UNIX control, omit the address field of the new entry connection. Fixes bug 8639. --- changes/bug8639 | 5 +++++ src/or/control.c | 17 +++++++++++++++-- src/or/dnsserv.c | 15 +++++++++++++++ 3 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/changes/bug8639 b/changes/bug8639 new file mode 100644 index 0000000..0db5c91 --- /dev/null +++ b/changes/bug8639 @@ -0,0 +1,5 @@ + o Normal bugfixes: + - When launching a resolve request on behalf of an AF_UNIX control + socket, omit the address field of the new entry connection, used in + subsequent controller events, rather than letting tor_dup_addr() set + it to "<unknown address type>". Fixes bug 8639. diff --git a/src/or/control.c b/src/or/control.c index 4878268..88bd00b 100644 --- a/src/or/control.c +++ b/src/or/control.c @@ -3743,8 +3743,21 @@ control_event_stream_status(entry_connection_t *conn, stream_status_event_t tp, }

if (tp == STREAM_EVENT_NEW || tp == STREAM_EVENT_NEW_RESOLVE) { - tor_snprintf(addrport_buf,sizeof(addrport_buf), " SOURCE_ADDR=%s:%d", - ENTRY_TO_CONN(conn)->address, ENTRY_TO_CONN(conn)->port); + /* + * When the control conn is an AF_UNIX socket and we have no address, + * it gets set to "(Tor_internal)"; see dnsserv_launch_request() in + * dnsserv.c. + */ + if (strcmp(ENTRY_TO_CONN(conn)->address, "(Tor_internal)") != 0) { + tor_snprintf(addrport_buf,sizeof(addrport_buf), " SOURCE_ADDR=%s:%d", + ENTRY_TO_CONN(conn)->address, ENTRY_TO_CONN(conn)->port); + } else { + /* + * else leave it blank so control on AF_UNIX doesn't need to make + * something up. + */ + addrport_buf[0] = '\0'; + } } else { addrport_buf[0] = '\0'; } diff --git a/src/or/dnsserv.c b/src/or/dnsserv.c index a1275cf..ebff7b5 100644 --- a/src/or/dnsserv.c +++ b/src/or/dnsserv.c @@ -183,8 +183,23 @@ dnsserv_launch_request(const char *name, int reverse, conn->base_.state = AP_CONN_STATE_RESOLVE_WAIT;

tor_addr_copy(&TO_CONN(conn)->addr, &control_conn->base_.addr); +#ifdef AF_UNIX + /* + * The control connection can be AF_UNIX and if so tor_dup_addr will + * unhelpfully say "<unknown address type>"; say "(Tor_internal)" + * instead. + */ + if (control_conn->base_.socket_family == AF_UNIX) { + TO_CONN(conn)->port = 0; + TO_CONN(conn)->address = tor_strdup("(Tor_internal)"); + } else { + TO_CONN(conn)->port = control_conn->base_.port; + TO_CONN(conn)->address = tor_dup_addr(&control_conn->base_.addr); + } +#else TO_CONN(conn)->port = control_conn->base_.port; TO_CONN(conn)->address = tor_dup_addr(&control_conn->base_.addr); +#endif

if (reverse) entry_conn->socks_request->command = SOCKS_COMMAND_RESOLVE_PTR;