commit 0da4ddda4f8f1c3c931349e45acbdcae2b7cc750 Author: rl1987 rl1987@sdf.lonestar.org Date: Tue Oct 14 21:56:04 2014 +0300

Checking if FQDN is actually IPv6 address string and handling that case. --- src/common/util.c | 2 +- src/or/buffers.c | 3 ++- src/test/test_socks.c | 11 +++++++++++ 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/common/util.c b/src/common/util.c index e9ee437..c292c79 100644 --- a/src/common/util.c +++ b/src/common/util.c @@ -976,7 +976,7 @@ string_is_valid_ipv6_address(const char *string) { struct sockaddr_in sockaddr_dummy;

- return (inet_pton(AF_INET6,string,&sockaddr_dummy) == 1); + return (tor_inet_pton(AF_INET6,string,&sockaddr_dummy) == 1); }

/** Return true iff <b>string</b> matches a pattern of DNS names diff --git a/src/or/buffers.c b/src/or/buffers.c index e98f569..354bec6 100644 --- a/src/or/buffers.c +++ b/src/or/buffers.c @@ -2049,7 +2049,8 @@ parse_socks(const char *data, size_t datalen, socks_request_t *req, req->port = ntohs(get_uint16(data+5+len)); *drain_out = 5+len+2;

- if (string_is_valid_ipv4_address(req->address)) { + if (string_is_valid_ipv4_address(req->address) || + string_is_valid_ipv6_address(req->address)) { log_unsafe_socks_warning(5,req->address,req->port,safe_socks);

if (safe_socks) diff --git a/src/test/test_socks.c b/src/test/test_socks.c index b9520b5..ba6b9a9 100644 --- a/src/test/test_socks.c +++ b/src/test/test_socks.c @@ -240,6 +240,17 @@ test_socks_5_supported_commands(void *ptr) == -1); socks_request_clear(socks);

+ /* SOCKS 5 should reject RESOLVE [F0] reject for IPv6 address + * string if SafeSocks is enabled. */ + + ADD_DATA(buf, "\x05\x01\x00"); + ADD_DATA(buf, "\x05\xF0\x00\x03\x27"); + ADD_DATA(buf, "2001:0db8:85a3:0000:0000:8a2e:0370:7334"); + ADD_DATA(buf, "\x01\x02"); + tt_assert(fetch_from_buf_socks(buf,socks,get_options()->TestSocks,1) + == -1); + socks_request_clear(socks); + /* SOCKS 5 Send RESOLVE_PTR [F1] for IP address 2.2.2.5 */ ADD_DATA(buf, "\x05\x01\x00"); ADD_DATA(buf, "\x05\xF1\x00\x01\x02\x02\x02\x05\x01\x03");