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Merge remote-tracking branch 'public/bug1666'

Browse Source 
Conflicts:
	doc/spec/socks-extensions.txt
	src/or/buffers.c
	src/or/config.c
	src/or/connection_edge.c
This commit is contained in:
Nick Mathewson 2011-07-13 12:12:16 -04:00
commit 1aab5b6b39
9 changed files with 567 additions and 69 deletions
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4
changes/bug1666 Normal file
View File

@ -0,0 +1,4 @@
o Minor features:
- Accept attempts to include a password authenticator in the handshake, as
supported by SOCKS5. This handles SOCKS clients that don't know how to
omit the password when authenticating. Resolves bug 1666.

184
src/or/buffers.c
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@ -1486,6 +1486,25 @@ log_unsafe_socks_warning(int socks_protocol, const char *address,
* actually significantly higher than the longest possible socks message. */
#define MAX_SOCKS_MESSAGE_LEN 512
/** Return a new socks_request_t. */
socks_request_t *
socks_request_new(void)
{
return tor_malloc_zero(sizeof(socks_request_t));
}
/** Free all storage held in the socks_request_t <b>req</b>. */
void
socks_request_free(socks_request_t *req)
{
if (!req)
return;
tor_free(req->username);
tor_free(req->password);
memset(req, 0xCC, sizeof(socks_request_t));
tor_free(req);
}
/** There is a (possibly incomplete) socks handshake on <b>buf</b>, of one
* of the forms
* - socks4: "socksheader username\\0"
@ -1536,9 +1555,8 @@ fetch_from_buf_socks(buf_t *buf, socks_request_t *req,
else if (n_drain > 0)
buf_remove_from_front(buf, n_drain);
} while (res == 0 && buf->head &&
buf->datalen > buf->head->datalen &&
want_length < buf->head->datalen);
} while (res == 0 && buf->head && want_length < buf->datalen &&
buf->datalen >= 2);
return res;
}
@ -1589,12 +1607,14 @@ fetch_from_evbuffer_socks(struct evbuffer *buf, socks_request_t *req,
* will need more data than we currently have. */
/* Loop while we have more data that we haven't given parse_socks() yet. */
while (evbuffer_get_length(buf) > datalen) {
do {
int free_data = 0;
const size_t last_wanted = want_length;
n_drain = 0;
data = NULL;
datalen = inspect_evbuffer(buf, &data, want_length, &free_data, NULL);
want_length = 0;
res = parse_socks(data, datalen, req, log_sockstype,
safe_socks, &n_drain, &want_length);
@ -1606,20 +1626,16 @@ fetch_from_evbuffer_socks(struct evbuffer *buf, socks_request_t *req,
else if (n_drain > 0)
evbuffer_drain(buf, n_drain);
if (res) /* If res is nonzero, parse_socks() made up its mind. */
return res;
/* If parse_socks says that we want less data than we actually tried to
give it, we've got some kind of weird situation; just exit the loop for
now.
*/
if (want_length <= datalen)
if (res == 0 && n_drain == 0 && want_length <= last_wanted) {
/* If we drained nothing, and we didn't ask for more than last time,
* we're stuck in a loop. That's bad. It shouldn't be possible, but
* let's make sure. */
log_warn(LD_BUG, "We seem to be caught in a parse loop; breaking out");
break;
/* Otherwise, it wants more data than we gave it. If we can provide more
* data than we gave it, we'll try to do so in the next iteration of the
* loop. If we can't, the while loop will exit. It's okay if it asked for
* more than we have total; maybe it doesn't really need so much. */
}
}
buflen = evbuffer_get_length(buf);
} while (res == 0 && want_length <= buflen && buflen >= 2);
return res;
}
@ -1642,47 +1658,114 @@ parse_socks(const char *data, size_t datalen, socks_request_t *req,
tor_addr_t destaddr;
uint32_t destip;
uint8_t socksver;
enum {socks4, socks4a} socks4_prot = socks4a;
char *next, *startaddr;
unsigned char usernamelen, passlen;
struct in_addr in;
if (datalen < 2) {
/* We always need at least 2 bytes. */
*want_length_out = 2;
return 0;
}
if (req->socks_version == 5 && !req->got_auth) {
/* See if we have received authentication. Strictly speaking, we should
also check whether we actually negotiated username/password
authentication. But some broken clients will send us authentication
even if we negotiated SOCKS_NO_AUTH. */
if (*data == 1) { /* username/pass version 1 */
/* Format is: authversion [1 byte] == 1
usernamelen [1 byte]
username [usernamelen bytes]
passlen [1 byte]
password [passlen bytes] */
usernamelen = (unsigned char)*(data + 1);
if (datalen < 2u + usernamelen + 1u) {
*want_length_out = 2u + usernamelen + 1u;
return 0;
}
passlen = (unsigned char)*(data + 2u + usernamelen);
if (datalen < 2u + usernamelen + 1u + passlen) {
*want_length_out = 2u + usernamelen + 1u + passlen;
return 0;
}
req->replylen = 2; /* 2 bytes of response */
req->reply[0] = 5;
req->reply[1] = 0; /* authentication successful */
log_debug(LD_APP,
"socks5: Accepted username/password without checking.");
if (usernamelen) {
req->username = tor_memdup(data+2u, usernamelen);
req->usernamelen = usernamelen;
}
if (passlen) {
req->password = tor_memdup(data+3u+usernamelen, passlen);
req->passwordlen = passlen;
}
*drain_out = 2u + usernamelen + 1u + passlen;
req->got_auth = 1;
*want_length_out = 7; /* Minimal socks5 sommand. */
return 0;
} else if (req->auth_type == SOCKS_USER_PASS) {
/* unknown version byte */
log_warn(LD_APP, "Socks5 username/password version %d not recognized; "
"rejecting.", (int)*data);
return -1;
}
}
socksver = *data;
switch (socksver) { /* which version of socks? */
case 5: /* socks5 */
if (req->socks_version != 5) { /* we need to negotiate a method */
unsigned char nummethods = (unsigned char)*(data+1);
int r=0;
tor_assert(!req->socks_version);
if (datalen < 2u+nummethods) {
*want_length_out = 2u+nummethods;
return 0;
}
if (!nummethods || !memchr(data+2, 0, nummethods)) {
log_warn(LD_APP,
"socks5: offered methods don't include 'no auth'. "
"Rejecting.");
req->replylen = 2; /* 2 bytes of response */
req->reply[0] = 5;
req->reply[1] = '\xFF'; /* reject all methods */
if (!nummethods)
return -1;
}
/* remove packet from buf. also remove any other extraneous
* bytes, to support broken socks clients. */
*drain_out = -1;
req->replylen = 2; /* 2 bytes of response */
req->reply[0] = 5; /* socks5 reply */
req->reply[1] = 0; /* tell client to use "none" auth method */
req->socks_version = 5; /* remember we've already negotiated auth */
log_debug(LD_APP,"socks5: accepted method 0");
return 0;
if (memchr(data+2, SOCKS_NO_AUTH, nummethods)) {
req->reply[1] = SOCKS_NO_AUTH; /* tell client to use "none" auth
method */
req->socks_version = 5; /* remember we've already negotiated auth */
log_debug(LD_APP,"socks5: accepted method 0 (no authentication)");
r=0;
} else if (memchr(data+2, SOCKS_USER_PASS, nummethods)) {
req->auth_type = SOCKS_USER_PASS;
req->reply[1] = SOCKS_USER_PASS; /* tell client to use "user/pass"
auth method */
req->socks_version = 5; /* remember we've already negotiated auth */
log_debug(LD_APP,"socks5: accepted method 2 (username/password)");
r=0;
} else {
log_warn(LD_APP,
"socks5: offered methods don't include 'no auth' or "
"username/password. Rejecting.");
req->reply[1] = '\xFF'; /* reject all methods */
r=-1;
}
/* Remove packet from buf. Some SOCKS clients will have sent extra
* junk at this point; let's hope it's an authentication message. */
*drain_out = 2u + nummethods;
return r;
}
if (req->auth_type != SOCKS_NO_AUTH && !req->got_auth) {
log_warn(LD_APP,
"socks5: negotiated authentication, but none provided");
return -1;
}
/* we know the method; read in the request */
log_debug(LD_APP,"socks5: checking request");
if (datalen < 8) {/* basic info plus >=2 for addr plus 2 for port */
*want_length_out = 8;
if (datalen < 7) {/* basic info plus >=1 for addr plus 2 for port */
*want_length_out = 7;
return 0; /* not yet */
}
req->command = (unsigned char) *(data+1);
@ -1771,9 +1854,11 @@ parse_socks(const char *data, size_t datalen, socks_request_t *req,
return -1;
}
tor_assert(0);
case 4: /* socks4 */
/* http://archive.socks.permeo.com/protocol/socks4.protocol */
/* http://archive.socks.permeo.com/protocol/socks4a.protocol */
case 4: { /* socks4 */
enum {socks4, socks4a} socks4_prot = socks4a;
const char *authstart, *authend;
/* http://ss5.sourceforge.net/socks4.protocol.txt */
/* http://ss5.sourceforge.net/socks4A.protocol.txt */
req->socks_version = 4;
if (datalen < SOCKS4_NETWORK_LEN) {/* basic info available? */
@ -1812,7 +1897,8 @@ parse_socks(const char *data, size_t datalen, socks_request_t *req,
socks4_prot = socks4;
}
next = memchr(data+SOCKS4_NETWORK_LEN, 0,
authstart = data + SOCKS4_NETWORK_LEN;
next = memchr(authstart, 0,
datalen-SOCKS4_NETWORK_LEN);
if (!next) {
if (datalen >= 1024) {
@ -1820,9 +1906,10 @@ parse_socks(const char *data, size_t datalen, socks_request_t *req,
return -1;
}
log_debug(LD_APP,"socks4: Username not here yet.");
*want_length_out = datalen+1024; /* ???? */
*want_length_out = datalen+1024; /* More than we need, but safe */
return 0;
}
authend = next;
tor_assert(next < data+datalen);
startaddr = NULL;
@ -1847,7 +1934,7 @@ parse_socks(const char *data, size_t datalen, socks_request_t *req,
return -1;
}
log_debug(LD_APP,"socks4: Destaddr not all here yet.");
*want_length_out = datalen + 1024;
*want_length_out = datalen + 1024; /* More than we need, but safe */
return 0;
}
if (MAX_SOCKS_ADDR_LEN <= next-startaddr) {
@ -1872,15 +1959,20 @@ parse_socks(const char *data, size_t datalen, socks_request_t *req,
req->port, escaped(req->address));
return -1;
}
if (authend != authstart) {
req->got_auth = 1;
req->usernamelen = authend - authstart;
req->username = tor_memdup(authstart, authend - authstart);
}
/* next points to the final \0 on inbuf */
*drain_out = next - data + 1;
return 1;
}
case 'G': /* get */
case 'H': /* head */
case 'P': /* put/post */
case 'C': /* connect */
strlcpy(req->reply,
strlcpy((char*)req->reply,
"HTTP/1.0 501 Tor is not an HTTP Proxy\r\n"
"Content-Type: text/html; charset=iso-8859-1\r\n\r\n"
"<html>\n"
@ -1906,7 +1998,7 @@ parse_socks(const char *data, size_t datalen, socks_request_t *req,
"</body>\n"
"</html>\n"
, MAX_SOCKS_REPLY_LEN);
req->replylen = strlen(req->reply)+1;
req->replylen = strlen((char*)req->reply)+1;
/* fall through */
default: /* version is not socks4 or socks5 */
log_warn(LD_APP,

2
src/or/buffers.h
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@ -41,6 +41,8 @@ int fetch_from_buf_http(buf_t *buf,
char **headers_out, size_t max_headerlen,
char **body_out, size_t *body_used, size_t max_bodylen,
int force_complete);
socks_request_t *socks_request_new(void);
void socks_request_free(socks_request_t *req);
int fetch_from_buf_socks(buf_t *buf, socks_request_t *req,
int log_sockstype, int safe_socks);
int fetch_from_buf_socks_client(buf_t *buf, int state, char **reason);

3
src/or/config.c
View File

@ -571,7 +571,6 @@ static int options_transition_affects_workers(
static int options_transition_affects_descriptor(
const or_options_t *old_options, const or_options_t *new_options);
static int check_nickname_list(const char *lst, const char *name, char **msg);
static void config_register_addressmaps(const or_options_t *options);
static int parse_bridge_line(const char *line, int validate_only);
static int parse_client_transport_line(const char *line, int validate_only);
@ -4430,7 +4429,7 @@ get_torrc_fname(void)
/** Adjust the address map based on the MapAddress elements in the
* configuration <b>options</b>
*/
static void
void
config_register_addressmaps(const or_options_t *options)
{
smartlist_t *elts;

2
src/or/config.h
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@ -79,5 +79,7 @@ uint32_t get_effective_bwburst(const or_options_t *options);
or_options_t *options_new(void);
#endif
void config_register_addressmaps(const or_options_t *options);
#endif

8
src/or/connection.c
View File

@ -248,7 +248,7 @@ edge_connection_new(int type, int socket_family)
tor_assert(type == CONN_TYPE_EXIT || type == CONN_TYPE_AP);
connection_init(time(NULL), TO_CONN(edge_conn), type, socket_family);
if (type == CONN_TYPE_AP)
edge_conn->socks_request = tor_malloc_zero(sizeof(socks_request_t));
edge_conn->socks_request = socks_request_new();
return edge_conn;
}
@ -442,10 +442,8 @@ _connection_free(connection_t *conn)
if (CONN_IS_EDGE(conn)) {
edge_connection_t *edge_conn = TO_EDGE_CONN(conn);
tor_free(edge_conn->chosen_exit_name);
if (edge_conn->socks_request) {
memset(edge_conn->socks_request, 0xcc, sizeof(socks_request_t));
tor_free(edge_conn->socks_request);
}
if (edge_conn->socks_request)
socks_request_free(edge_conn->socks_request);
rend_data_free(edge_conn->rend_data);
}

23
src/or/connection_edge.c
View File

@ -2145,6 +2145,7 @@ connection_ap_handshake_process_socks(edge_connection_t *conn)
socks_request_t *socks;
int sockshere;
const or_options_t *options = get_options();
int had_reply = 0;
tor_assert(conn);
tor_assert(conn->_base.type == CONN_TYPE_AP);
@ -2162,22 +2163,18 @@ connection_ap_handshake_process_socks(edge_connection_t *conn)
sockshere = fetch_from_buf_socks(conn->_base.inbuf, socks,
options->TestSocks, options->SafeSocks);
};
if (socks->replylen) {
had_reply = 1;
connection_write_to_buf(socks->reply, socks->replylen, TO_CONN(conn));
socks->replylen = 0;
}
if (sockshere == 0) {
if (socks->replylen) {
connection_write_to_buf(socks->reply, socks->replylen, TO_CONN(conn));
/* zero it out so we can do another round of negotiation */
socks->replylen = 0;
} else {
log_debug(LD_APP,"socks handshake not all here yet.");
}
log_debug(LD_APP,"socks handshake not all here yet.");
return 0;
} else if (sockshere == -1) {
if (socks->replylen) { /* we should send reply back */
log_debug(LD_APP,"reply is already set for us. Using it.");
connection_ap_handshake_socks_reply(conn, socks->reply, socks->replylen,
END_STREAM_REASON_SOCKSPROTOCOL);
} else {
if (!had_reply) {
log_warn(LD_APP,"Fetching socks handshake failed. Closing.");
connection_ap_handshake_socks_reply(conn, NULL, 0,
END_STREAM_REASON_SOCKSPROTOCOL);

26
src/or/or.h
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@ -3182,6 +3182,8 @@ static INLINE void or_state_mark_dirty(or_state_t *state, time_t when)
#define MAX_SOCKS_REPLY_LEN 1024
#define MAX_SOCKS_ADDR_LEN 256
#define SOCKS_NO_AUTH 0x00
#define SOCKS_USER_PASS 0x02
/** Please open a TCP connection to this addr:port. */
#define SOCKS_COMMAND_CONNECT 0x01
@ -3201,10 +3203,15 @@ struct socks_request_t {
/** Which version of SOCKS did the client use? One of "0, 4, 5" -- where
* 0 means that no socks handshake ever took place, and this is just a
* stub connection (e.g. see connection_ap_make_link()). */
char socks_version;
int command; /**< What is this stream's goal? One from the above list. */
uint8_t socks_version;
/** If using socks5 authentication, which authentication type did we
* negotiate? currently we support 0 (no authentication) and 2
* (username/password). */
uint8_t auth_type;
/** What is this stream's goal? One of the SOCKS_COMMAND_* values */
uint8_t command;
size_t replylen; /**< Length of <b>reply</b>. */
char reply[MAX_SOCKS_REPLY_LEN]; /**< Write an entry into this string if
uint8_t reply[MAX_SOCKS_REPLY_LEN]; /**< Write an entry into this string if
* we want to specify our own socks reply,
* rather than using the default socks4 or
* socks5 socks reply. We use this for the
@ -3216,6 +3223,19 @@ struct socks_request_t {
unsigned int has_finished : 1; /**< Has the SOCKS handshake finished? Used to
* make sure we send back a socks reply for
* every connection. */
unsigned int got_auth : 1; /**< Have we received any authentication data? */
/** Number of bytes in username; 0 if username is NULL */
uint8_t usernamelen;
/** Number of bytes in password; 0 if password is NULL */
uint8_t passwordlen;
/** The negotiated username value if any (for socks5), or the entire
* authentication string (for socks4). This value is NOT nul-terminated;
* see usernamelen for its length. */
char *username;
/** The negotiated password value if any (for socks5). This value is NOT
* nul-terminated; see passwordlen for its length. */
char *password;
};
/********************************* circuitbuild.c **********************/

384
src/test/test.c
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@ -203,6 +203,372 @@ free_pregenerated_keys(void)
}
}
typedef struct socks_test_data_t {
socks_request_t *req;
buf_t *buf;
} socks_test_data_t;
static void *
socks_test_setup(const struct testcase_t *testcase)
{
socks_test_data_t *data = tor_malloc(sizeof(socks_test_data_t));
(void)testcase;
data->buf = buf_new_with_capacity(256);
data->req = socks_request_new();
config_register_addressmaps(get_options());
return data;
}
static int
socks_test_cleanup(const struct testcase_t *testcase, void *ptr)
{
socks_test_data_t *data = ptr;
(void)testcase;
buf_free(data->buf);
socks_request_free(data->req);
tor_free(data);
return 1;
}
const struct testcase_setup_t socks_setup = {
socks_test_setup, socks_test_cleanup
};
#define SOCKS_TEST_INIT() \
socks_test_data_t *testdata = ptr; \
buf_t *buf = testdata->buf; \
socks_request_t *socks = testdata->req;
#define ADD_DATA(buf, s) \
write_to_buf(s, sizeof(s)-1, buf)
static void
socks_request_clear(socks_request_t *socks)
{
tor_free(socks->username);
tor_free(socks->password);
memset(socks, 0, sizeof(socks_request_t));
}
/** Perform unsupported SOCKS 4 commands */
static void
test_socks_4_unsupported_commands(void *ptr)
{
SOCKS_TEST_INIT();
/* SOCKS 4 Send BIND [02] to IP address 2.2.2.2:4369 */
ADD_DATA(buf, "\x04\x02\x11\x11\x02\x02\x02\x02\x00");
test_assert(fetch_from_buf_socks(buf, socks, get_options()->TestSocks,
get_options()->SafeSocks) == -1);
test_eq(4, socks->socks_version);
test_eq(0, socks->replylen); /* XXX: shouldn't tor reply? */
done:
;
}
/** Perform supported SOCKS 4 commands */
static void
test_socks_4_supported_commands(void *ptr)
{
SOCKS_TEST_INIT();
test_eq(0, buf_datalen(buf));
/* SOCKS 4 Send CONNECT [01] to IP address 2.2.2.2:4370 */
ADD_DATA(buf, "\x04\x01\x11\x12\x02\x02\x02\x03\x00");
test_assert(fetch_from_buf_socks(buf, socks, get_options()->TestSocks,
get_options()->SafeSocks) == 1);
test_eq(4, socks->socks_version);
test_eq(0, socks->replylen); /* XXX: shouldn't tor reply? */
test_eq(SOCKS_COMMAND_CONNECT, socks->command);
test_streq("2.2.2.3", socks->address);
test_eq(4370, socks->port);
test_assert(socks->got_auth == 0);
test_assert(! socks->username);
test_eq(0, buf_datalen(buf));
socks_request_clear(socks);
/* SOCKS 4 Send CONNECT [01] to IP address 2.2.2.2:4369 with userid*/
ADD_DATA(buf, "\x04\x01\x11\x12\x02\x02\x02\x04me\x00");
test_assert(fetch_from_buf_socks(buf, socks, get_options()->TestSocks,
get_options()->SafeSocks) == 1);
test_eq(4, socks->socks_version);
test_eq(0, socks->replylen); /* XXX: shouldn't tor reply? */
test_eq(SOCKS_COMMAND_CONNECT, socks->command);
test_streq("2.2.2.4", socks->address);
test_eq(4370, socks->port);
test_assert(socks->got_auth == 1);
test_assert(socks->username);
test_eq(2, socks->usernamelen);
test_memeq("me", socks->username, 2);
test_eq(0, buf_datalen(buf));
socks_request_clear(socks);
/* SOCKS 4a Send RESOLVE [F0] request for torproject.org */
ADD_DATA(buf, "\x04\xF0\x01\x01\x00\x00\x00\x02me\x00torproject.org\x00");
test_assert(fetch_from_buf_socks(buf, socks, get_options()->TestSocks,
get_options()->SafeSocks) == 1);
test_eq(4, socks->socks_version);
test_eq(0, socks->replylen); /* XXX: shouldn't tor reply? */
test_streq("torproject.org", socks->address);
test_eq(0, buf_datalen(buf));
done:
;
}
/** Perform unsupported SOCKS 5 commands */
static void
test_socks_5_unsupported_commands(void *ptr)
{
SOCKS_TEST_INIT();
/* SOCKS 5 Send unsupported BIND [02] command */
ADD_DATA(buf, "\x05\x02\x00\x01");
test_eq(fetch_from_buf_socks(buf, socks, get_options()->TestSocks,
get_options()->SafeSocks), 0);
test_eq(0, buf_datalen(buf));
test_eq(5, socks->socks_version);
test_eq(2, socks->replylen);
test_eq(5, socks->reply[0]);
test_eq(0, socks->reply[1]);
ADD_DATA(buf, "\x05\x02\x00\x01\x02\x02\x02\x01\x01\x01");
test_eq(fetch_from_buf_socks(buf, socks, get_options()->TestSocks,
get_options()->SafeSocks), -1);
/* XXX: shouldn't tor reply 'command not supported' [07]? */
buf_clear(buf);
socks_request_clear(socks);
/* SOCKS 5 Send unsupported UDP_ASSOCIATE [03] command */
ADD_DATA(buf, "\x05\x03\x00\x01\x02");
test_eq(fetch_from_buf_socks(buf, socks, get_options()->TestSocks,
get_options()->SafeSocks), 0);
test_eq(5, socks->socks_version);
test_eq(2, socks->replylen);
test_eq(5, socks->reply[0]);
test_eq(0, socks->reply[1]);
ADD_DATA(buf, "\x05\x03\x00\x01\x02\x02\x02\x01\x01\x01");
test_eq(fetch_from_buf_socks(buf, socks, get_options()->TestSocks,
get_options()->SafeSocks), -1);
/* XXX: shouldn't tor reply 'command not supported' [07]? */
done:
;
}
/** Perform supported SOCKS 5 commands */
static void
test_socks_5_supported_commands(void *ptr)
{
SOCKS_TEST_INIT();
/* SOCKS 5 Send CONNECT [01] to IP address 2.2.2.2:4369 */
ADD_DATA(buf, "\x05\x01\x00");
test_eq(fetch_from_buf_socks(buf, socks, get_options()->TestSocks,
get_options()->SafeSocks), 0);
test_eq(5, socks->socks_version);
test_eq(2, socks->replylen);
test_eq(5, socks->reply[0]);
test_eq(0, socks->reply[1]);
ADD_DATA(buf, "\x05\x01\x00\x01\x02\x02\x02\x02\x11\x11");
test_eq(fetch_from_buf_socks(buf, socks, get_options()->TestSocks,
get_options()->SafeSocks), 1);
test_streq("2.2.2.2", socks->address);
test_eq(4369, socks->port);
test_eq(0, buf_datalen(buf));
socks_request_clear(socks);
/* SOCKS 5 Send CONNECT [01] to FQDN torproject.org:4369 */
ADD_DATA(buf, "\x05\x01\x00");
ADD_DATA(buf, "\x05\x01\x00\x03\x0Etorproject.org\x11\x11");
test_eq(fetch_from_buf_socks(buf, socks, get_options()->TestSocks,
get_options()->SafeSocks), 1);
test_eq(5, socks->socks_version);
test_eq(2, socks->replylen);
test_eq(5, socks->reply[0]);
test_eq(0, socks->reply[1]);
test_streq("torproject.org", socks->address);
test_eq(4369, socks->port);
test_eq(0, buf_datalen(buf));
socks_request_clear(socks);
/* SOCKS 5 Send RESOLVE [F0] request for torproject.org:4369 */
ADD_DATA(buf, "\x05\x01\x00");
ADD_DATA(buf, "\x05\xF0\x00\x03\x0Etorproject.org\x01\x02");
test_assert(fetch_from_buf_socks(buf, socks, get_options()->TestSocks,
get_options()->SafeSocks) == 1);
test_eq(5, socks->socks_version);
test_eq(2, socks->replylen);
test_eq(5, socks->reply[0]);
test_eq(0, socks->reply[1]);
test_streq("torproject.org", socks->address);
test_eq(0, buf_datalen(buf));
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");
test_assert(fetch_from_buf_socks(buf, socks, get_options()->TestSocks,
get_options()->SafeSocks) == 1);
test_eq(5, socks->socks_version);
test_eq(2, socks->replylen);
test_eq(5, socks->reply[0]);
test_eq(0, socks->reply[1]);
test_streq("2.2.2.5", socks->address);
test_eq(0, buf_datalen(buf));
done:
;
}
/** Perform SOCKS 5 authentication */
static void
test_socks_5_no_authenticate(void *ptr)
{
SOCKS_TEST_INIT();
/*SOCKS 5 No Authentication */
ADD_DATA(buf,"\x05\x01\x00");
test_assert(!fetch_from_buf_socks(buf, socks,
get_options()->TestSocks,
get_options()->SafeSocks));
test_eq(2, socks->replylen);
test_eq(5, socks->reply[0]);
test_eq(SOCKS_NO_AUTH, socks->reply[1]);
test_eq(0, buf_datalen(buf));
/*SOCKS 5 Send username/password anyway - pretend to be broken */
ADD_DATA(buf,"\x01\x02\x01\x01\x02\x01\x01");
test_assert(!fetch_from_buf_socks(buf, socks,
get_options()->TestSocks,
get_options()->SafeSocks));
test_eq(5, socks->socks_version);
test_eq(2, socks->replylen);
test_eq(5, socks->reply[0]);
test_eq(0, socks->reply[1]);
test_eq(2, socks->usernamelen);
test_eq(2, socks->passwordlen);
test_memeq("\x01\x01", socks->username, 2);
test_memeq("\x01\x01", socks->password, 2);
done:
;
}
/** Perform SOCKS 5 authentication */
static void
test_socks_5_authenticate(void *ptr)
{
SOCKS_TEST_INIT();
/* SOCKS 5 Negotiate username/password authentication */
ADD_DATA(buf, "\x05\x01\x02");
test_assert(!fetch_from_buf_socks(buf, socks,
get_options()->TestSocks,
get_options()->SafeSocks));
test_eq(2, socks->replylen);
test_eq(5, socks->reply[0]);
test_eq(SOCKS_USER_PASS, socks->reply[1]);
test_eq(5, socks->socks_version);
test_eq(0, buf_datalen(buf));
/* SOCKS 5 Send username/password */
ADD_DATA(buf, "\x01\x02me\x08mypasswd");
test_assert(!fetch_from_buf_socks(buf, socks,
get_options()->TestSocks,
get_options()->SafeSocks));
test_eq(5, socks->socks_version);
test_eq(2, socks->replylen);
test_eq(5, socks->reply[0]);
test_eq(0, socks->reply[1]);
test_eq(2, socks->usernamelen);
test_eq(8, socks->passwordlen);
test_memeq("me", socks->username, 2);
test_memeq("mypasswd", socks->password, 8);
done:
;
}
/** Perform SOCKS 5 authentication and send data all in one go */
static void
test_socks_5_authenticate_with_data(void *ptr)
{
SOCKS_TEST_INIT();
/* SOCKS 5 Negotiate username/password authentication */
ADD_DATA(buf, "\x05\x01\x02");
test_assert(!fetch_from_buf_socks(buf, socks,
get_options()->TestSocks,
get_options()->SafeSocks));
test_eq(2, socks->replylen);
test_eq(5, socks->reply[0]);
test_eq(SOCKS_USER_PASS, socks->reply[1]);
test_eq(5, socks->socks_version);
test_eq(0, buf_datalen(buf));
/* SOCKS 5 Send username/password */
/* SOCKS 5 Send CONNECT [01] to IP address 2.2.2.2:4369 */
ADD_DATA(buf, "\x01\x02me\x03you\x05\x01\x00\x01\x02\x02\x02\x02\x11\x11");
test_assert(fetch_from_buf_socks(buf, socks,
get_options()->TestSocks,
get_options()->SafeSocks) == 1);
test_eq(5, socks->socks_version);
test_eq(2, socks->replylen);
test_eq(5, socks->reply[0]);
test_eq(0, socks->reply[1]);
test_streq("2.2.2.2", socks->address);
test_eq(4369, socks->port);
test_eq(2, socks->usernamelen);
test_eq(3, socks->passwordlen);
test_memeq("me", socks->username, 2);
test_memeq("you", socks->password, 3);
done:
;
}
/** Perform SOCKS 5 authentication before method negotiated */
static void
test_socks_5_auth_before_negotiation(void *ptr)
{
SOCKS_TEST_INIT();
/* SOCKS 5 Send username/password */
ADD_DATA(buf, "\x01\x02me\x02me");
test_assert(fetch_from_buf_socks(buf, socks,
get_options()->TestSocks,
get_options()->SafeSocks) == -1);
test_eq(0, socks->socks_version);
test_eq(0, socks->replylen);
test_eq(0, socks->reply[0]);
test_eq(0, socks->reply[1]);
done:
;
}
/** Run unit tests for buffers.c */
static void
test_buffers(void)
@ -1255,6 +1621,23 @@ static struct testcase_t test_array[] = {
END_OF_TESTCASES
};
#define SOCKSENT(name) \
{ #name, test_socks_##name, TT_FORK, &socks_setup, NULL }
static struct testcase_t socks_tests[] = {
SOCKSENT(4_unsupported_commands),
SOCKSENT(4_supported_commands),
SOCKSENT(5_unsupported_commands),
SOCKSENT(5_supported_commands),
SOCKSENT(5_no_authenticate),
SOCKSENT(5_auth_before_negotiation),
SOCKSENT(5_authenticate),
SOCKSENT(5_authenticate_with_data),
END_OF_TESTCASES
};
extern struct testcase_t addr_tests[];
extern struct testcase_t crypto_tests[];
extern struct testcase_t container_tests[];
@ -1264,6 +1647,7 @@ extern struct testcase_t microdesc_tests[];
static struct testgroup_t testgroups[] = {
{ "", test_array },
{ "socks/", socks_tests },
{ "addr/", addr_tests },
{ "crypto/", crypto_tests },
{ "container/", container_tests },