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Raise the TrackHostExits membership code into its own function

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This commit is contained in:
Nick Mathewson 2011-05-13 16:22:10 -04:00
parent 09da83e1e8
commit ec81d17d0c
2 changed files with 24 additions and 13 deletions
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35
src/or/circuituse.c
View file

@ -1485,12 +1485,31 @@ link_apconn_to_circ(edge_connection_t *apconn, origin_circuit_t *circ,
} }
} }
/** Return true iff <b>address</b> is matched by one of the entries in
* TrackHostExits. */
int
hostname_in_track_host_exits(or_options_t *options, const char *address)
{
if (!options->TrackHostExits)
return 0;
SMARTLIST_FOREACH_BEGIN(options->TrackHostExits, const char *, cp) {
if (cp[0] == '.') { /* match end */
if (cp[1] == '\0' ||
!strcasecmpend(address, cp) ||
!strcasecmp(address, &cp[1]))
return 1;
} else if (strcasecmp(cp, address) == 0) {
return 1;
}
} SMARTLIST_FOREACH_END(cp);
return 0;
}
/** If an exit wasn't specifically chosen, save the history for future /** If an exit wasn't specifically chosen, save the history for future
* use. */ * use. */
static void static void
consider_recording_trackhost(edge_connection_t *conn, origin_circuit_t *circ) consider_recording_trackhost(edge_connection_t *conn, origin_circuit_t *circ)
{ {
int found_needle = 0;
or_options_t *options = get_options(); or_options_t *options = get_options();
size_t len; size_t len;
char *new_address; char *new_address;
@ -1503,18 +1522,8 @@ consider_recording_trackhost(edge_connection_t *conn, origin_circuit_t *circ)
options->TrackHostExitsExpire)) options->TrackHostExitsExpire))
return; /* nothing to track, or already mapped */ return; /* nothing to track, or already mapped */
SMARTLIST_FOREACH(options->TrackHostExits, const char *, cp, { if (!hostname_in_track_host_exits(options, conn->socks_request->address) ||
if (cp[0] == '.') { /* match end */ !circ->build_state->chosen_exit)
if (cp[1] == '\0' ||
!strcasecmpend(conn->socks_request->address, cp) ||
!strcasecmp(conn->socks_request->address, &cp[1]))
found_needle = 1;
} else if (strcasecmp(cp, conn->socks_request->address) == 0) {
found_needle = 1;
}
});
if (!found_needle || !circ->build_state->chosen_exit)
return; return;
/* write down the fingerprint of the chosen exit, not the nickname, /* write down the fingerprint of the chosen exit, not the nickname,

2
src/or/circuituse.h
View file

@ -51,5 +51,7 @@ int connection_ap_handshake_attach_chosen_circuit(edge_connection_t *conn,
crypt_path_t *cpath); crypt_path_t *cpath);
int connection_ap_handshake_attach_circuit(edge_connection_t *conn); int connection_ap_handshake_attach_circuit(edge_connection_t *conn);
int hostname_in_track_host_exits(or_options_t *options, const char *address);
#endif #endif