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tor/src/test/test_address.c
teor (Tim Wilson-Brown) 86eba14ac5 Fix unit tests on systems without IPv4 or localhost addresses 
Make unit tests pass on IPv6-only systems, and systems without
localhost addresses (like some FreeBSD jails).

Fixes:
* get_if_addrs_ifaddrs: systems without localhost
* get_if_addrs_ioctl: only works on IPv4 systems
* socket: check IPv4 and IPv6, skip on EPROTONOSUPPORT
* socketpair_ersatz: uses IPv4, skip on EPROTONOSUPPORT

Fixes bug #17632; bugfix on unit tests in 0.2.7.3-rc.
c464a36772 was a partial fix for this issue in #17255;
it was released in unit tests in 0.2.7.4-rc.

Patch by "teor".
2015-11-18 23:25:21 +11:00

1135 lines
30 KiB
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/* Copyright (c) 2014-2015, The Tor Project, Inc. */
/* See LICENSE for licensing information */
#define ADDRESS_PRIVATE
#include "orconfig.h"
#ifdef _WIN32
#include <winsock2.h>
/* For access to structs needed by GetAdaptersAddresses */
#include <iphlpapi.h>
#endif
#ifdef HAVE_IFADDRS_TO_SMARTLIST
#include <net/if.h>
#include <ifaddrs.h>
#endif
#ifdef HAVE_IFCONF_TO_SMARTLIST
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#include <net/if.h>
#endif
#include "or.h"
#include "address.h"
#include "test.h"
/** Return 1 iff <b>sockaddr1</b> and <b>sockaddr2</b> represent
* the same IP address and port combination. Otherwise, return 0.
*/
static uint8_t
sockaddr_in_are_equal(struct sockaddr_in *sockaddr1,
struct sockaddr_in *sockaddr2)
{
return ((sockaddr1->sin_family == sockaddr2->sin_family) &&
(sockaddr1->sin_port == sockaddr2->sin_port) &&
(sockaddr1->sin_addr.s_addr == sockaddr2->sin_addr.s_addr));
}
/** Return 1 iff <b>sockaddr1</b> and <b>sockaddr2</b> represent
* the same IP address and port combination. Otherwise, return 0.
*/
static uint8_t
sockaddr_in6_are_equal(struct sockaddr_in6 *sockaddr1,
struct sockaddr_in6 *sockaddr2)
{
return ((sockaddr1->sin6_family == sockaddr2->sin6_family) &&
(sockaddr1->sin6_port == sockaddr2->sin6_port) &&
(tor_memeq(sockaddr1->sin6_addr.s6_addr,
sockaddr2->sin6_addr.s6_addr,16)));
}
/** Create a sockaddr_in structure from IP address string <b>ip_str</b>.
*
* If <b>out</b> is not NULL, write the result
* to the memory address in <b>out</b>. Otherwise, allocate the memory
* for result. On success, return pointer to result. Otherwise, return
* NULL.
*/
static struct sockaddr_in *
sockaddr_in_from_string(const char *ip_str, struct sockaddr_in *out)
{
// [FIXME: add some error checking?]
if (!out)
out = tor_malloc_zero(sizeof(struct sockaddr_in));
out->sin_family = AF_INET;
out->sin_port = 0;
tor_inet_pton(AF_INET,ip_str,&(out->sin_addr));
return out;
}
/** Return 1 iff <b>smartlist</b> contains a tor_addr_t structure
* that is an IPv4 or IPv6 localhost address. Otherwise, return 0.
*/
static int
smartlist_contains_localhost_tor_addr(smartlist_t *smartlist)
{
SMARTLIST_FOREACH_BEGIN(smartlist, tor_addr_t *, tor_addr) {
if (tor_addr_is_loopback(tor_addr)) {
return 1;
}
} SMARTLIST_FOREACH_END(tor_addr);
return 0;
}
/** Return 1 iff <b>smartlist</b> contains a tor_addr_t structure
* that is an IPv4 or IPv6 multicast address. Otherwise, return 0.
*/
static int
smartlist_contains_multicast_tor_addr(smartlist_t *smartlist)
{
SMARTLIST_FOREACH_BEGIN(smartlist, tor_addr_t *, tor_addr) {
if (tor_addr_is_multicast(tor_addr)) {
return 1;
}
} SMARTLIST_FOREACH_END(tor_addr);
return 0;
}
/** Return 1 iff <b>smartlist</b> contains a tor_addr_t structure
* that is an IPv4 or IPv6 internal address. Otherwise, return 0.
*/
static int
smartlist_contains_internal_tor_addr(smartlist_t *smartlist)
{
SMARTLIST_FOREACH_BEGIN(smartlist, tor_addr_t *, tor_addr) {
if (tor_addr_is_internal(tor_addr, 0)) {
return 1;
}
} SMARTLIST_FOREACH_END(tor_addr);
return 0;
}
/** Return 1 iff <b>smartlist</b> contains a tor_addr_t structure
* that is NULL or the null tor_addr_t. Otherwise, return 0.
*/
static int
smartlist_contains_null_tor_addr(smartlist_t *smartlist)
{
SMARTLIST_FOREACH_BEGIN(smartlist, tor_addr_t *, tor_addr) {
if (tor_addr == NULL || tor_addr_is_null(tor_addr)) {
return 1;
}
} SMARTLIST_FOREACH_END(tor_addr);
return 0;
}
/** Return 1 iff <b>smartlist</b> contains a tor_addr_t structure
* that is an IPv4 address. Otherwise, return 0.
*/
static int
smartlist_contains_ipv4_tor_addr(smartlist_t *smartlist)
{
SMARTLIST_FOREACH_BEGIN(smartlist, tor_addr_t *, tor_addr) {
if (tor_addr_is_v4(tor_addr)) {
return 1;
}
} SMARTLIST_FOREACH_END(tor_addr);
return 0;
}
/** Return 1 iff <b>smartlist</b> contains a tor_addr_t structure
* that is an IPv6 address. Otherwise, return 0.
*/
static int
smartlist_contains_ipv6_tor_addr(smartlist_t *smartlist)
{
SMARTLIST_FOREACH_BEGIN(smartlist, tor_addr_t *, tor_addr) {
/* Since there's no tor_addr_is_v6, assume all non-v4s are v6 */
if (!tor_addr_is_v4(tor_addr)) {
return 1;
}
} SMARTLIST_FOREACH_END(tor_addr);
return 0;
}
#ifdef HAVE_IFADDRS_TO_SMARTLIST
static void
test_address_ifaddrs_to_smartlist(void *arg)
{
struct ifaddrs *ifa = NULL;
struct ifaddrs *ifa_ipv4 = NULL;
struct ifaddrs *ifa_ipv6 = NULL;
struct sockaddr_in *ipv4_sockaddr_local = NULL;
struct sockaddr_in *netmask_slash8 = NULL;
struct sockaddr_in *ipv4_sockaddr_remote = NULL;
struct sockaddr_in6 *ipv6_sockaddr = NULL;
smartlist_t *smartlist = NULL;
tor_addr_t *tor_addr = NULL;
struct sockaddr *sockaddr_to_check = NULL;
socklen_t addr_len;
(void)arg;
netmask_slash8 = sockaddr_in_from_string("255.0.0.0",NULL);
ipv4_sockaddr_local = sockaddr_in_from_string("127.0.0.1",NULL);
ipv4_sockaddr_remote = sockaddr_in_from_string("128.52.160.20",NULL);
ipv6_sockaddr = tor_malloc(sizeof(struct sockaddr_in6));
ipv6_sockaddr->sin6_family = AF_INET6;
ipv6_sockaddr->sin6_port = 0;
tor_inet_pton(AF_INET6, "2001:db8:8714:3a90::12",
&(ipv6_sockaddr->sin6_addr));
ifa = tor_malloc(sizeof(struct ifaddrs));
ifa_ipv4 = tor_malloc(sizeof(struct ifaddrs));
ifa_ipv6 = tor_malloc(sizeof(struct ifaddrs));
ifa->ifa_next = ifa_ipv4;
ifa->ifa_name = tor_strdup("eth0");
ifa->ifa_flags = IFF_UP | IFF_RUNNING;
ifa->ifa_addr = (struct sockaddr *)ipv4_sockaddr_local;
ifa->ifa_netmask = (struct sockaddr *)netmask_slash8;
ifa->ifa_dstaddr = NULL;
ifa->ifa_data = NULL;
ifa_ipv4->ifa_next = ifa_ipv6;
ifa_ipv4->ifa_name = tor_strdup("eth1");
ifa_ipv4->ifa_flags = IFF_UP | IFF_RUNNING;
ifa_ipv4->ifa_addr = (struct sockaddr *)ipv4_sockaddr_remote;
ifa_ipv4->ifa_netmask = (struct sockaddr *)netmask_slash8;
ifa_ipv4->ifa_dstaddr = NULL;
ifa_ipv4->ifa_data = NULL;
ifa_ipv6->ifa_next = NULL;
ifa_ipv6->ifa_name = tor_strdup("eth2");
ifa_ipv6->ifa_flags = IFF_UP | IFF_RUNNING;
ifa_ipv6->ifa_addr = (struct sockaddr *)ipv6_sockaddr;
ifa_ipv6->ifa_netmask = NULL;
ifa_ipv6->ifa_dstaddr = NULL;
ifa_ipv6->ifa_data = NULL;
smartlist = ifaddrs_to_smartlist(ifa);
tt_assert(smartlist);
tt_assert(smartlist_len(smartlist) == 3);
sockaddr_to_check = tor_malloc(sizeof(struct sockaddr_in6));
tor_addr = smartlist_get(smartlist,0);
addr_len =
tor_addr_to_sockaddr(tor_addr,0,sockaddr_to_check,
sizeof(struct sockaddr_in));
tt_int_op(addr_len,==,sizeof(struct sockaddr_in));
tt_assert(sockaddr_in_are_equal((struct sockaddr_in *)sockaddr_to_check,
ipv4_sockaddr_local));
tor_addr = smartlist_get(smartlist,1);
addr_len =
tor_addr_to_sockaddr(tor_addr,0,sockaddr_to_check,
sizeof(struct sockaddr_in));
tt_int_op(addr_len,==,sizeof(struct sockaddr_in));
tt_assert(sockaddr_in_are_equal((struct sockaddr_in *)sockaddr_to_check,
ipv4_sockaddr_remote));
tor_addr = smartlist_get(smartlist,2);
addr_len =
tor_addr_to_sockaddr(tor_addr,0,sockaddr_to_check,
sizeof(struct sockaddr_in6));
tt_int_op(addr_len,==,sizeof(struct sockaddr_in6));
tt_assert(sockaddr_in6_are_equal((struct sockaddr_in6*)sockaddr_to_check,
ipv6_sockaddr));
done:
tor_free(netmask_slash8);
tor_free(ipv4_sockaddr_local);
tor_free(ipv4_sockaddr_remote);
tor_free(ipv6_sockaddr);
tor_free(ifa->ifa_name);
tor_free(ifa_ipv4->ifa_name);
tor_free(ifa_ipv6->ifa_name);
tor_free(ifa);
tor_free(ifa_ipv4);
tor_free(ifa_ipv6);
tor_free(sockaddr_to_check);
if (smartlist) {
SMARTLIST_FOREACH(smartlist, tor_addr_t *, t, tor_free(t));
smartlist_free(smartlist);
}
return;
}
static void
test_address_get_if_addrs_ifaddrs(void *arg)
{
smartlist_t *results = NULL;
(void)arg;
results = get_interface_addresses_ifaddrs(LOG_ERR);
tt_assert(results);
/* Some FreeBSD jails don't have localhost IP address. Instead, they only
* have the address assigned to the jail (whatever that may be).
* And a jail without a network connection might not have any addresses at
* all. */
tt_assert(!smartlist_contains_null_tor_addr(results));
/* If there are addresses, they must be IPv4 or IPv6 */
if (smartlist_len(results) > 0) {
tt_assert(smartlist_contains_ipv4_tor_addr(results)
|| smartlist_contains_ipv6_tor_addr(results));
}
done:
SMARTLIST_FOREACH(results, tor_addr_t *, t, tor_free(t));
smartlist_free(results);
return;
}
#endif
#ifdef HAVE_IP_ADAPTER_TO_SMARTLIST
static void
test_address_get_if_addrs_win32(void *arg)
{
smartlist_t *results = NULL;
(void)arg;
results = get_interface_addresses_win32(LOG_ERR);
tt_int_op(smartlist_len(results),>=,1);
tt_assert(smartlist_contains_localhost_tor_addr(results));
tt_assert(!smartlist_contains_null_tor_addr(results));
/* If there are addresses, they must be IPv4 or IPv6 */
if (smartlist_len(results) > 0) {
tt_assert(smartlist_contains_ipv4_tor_addr(results)
|| smartlist_contains_ipv6_tor_addr(results));
}
done:
SMARTLIST_FOREACH(results, tor_addr_t *, t, tor_free(t));
tor_free(results);
return;
}
static void
test_address_ip_adapter_addresses_to_smartlist(void *arg)
{
IP_ADAPTER_ADDRESSES *addrs1;
IP_ADAPTER_ADDRESSES *addrs2;
IP_ADAPTER_UNICAST_ADDRESS *unicast11;
IP_ADAPTER_UNICAST_ADDRESS *unicast12;
IP_ADAPTER_UNICAST_ADDRESS *unicast21;
smartlist_t *result = NULL;
struct sockaddr_in *sockaddr_test1;
struct sockaddr_in *sockaddr_test2;
struct sockaddr_in *sockaddr_localhost;
struct sockaddr_in *sockaddr_to_check;
tor_addr_t *tor_addr;
(void)arg;
(void)sockaddr_in6_are_equal;
sockaddr_to_check = tor_malloc_zero(sizeof(struct sockaddr_in));
addrs1 =
tor_malloc_zero(sizeof(IP_ADAPTER_ADDRESSES));
addrs1->FirstUnicastAddress =
unicast11 = tor_malloc_zero(sizeof(IP_ADAPTER_UNICAST_ADDRESS));
sockaddr_test1 = sockaddr_in_from_string("86.59.30.40",NULL);
unicast11->Address.lpSockaddr = (LPSOCKADDR)sockaddr_test1;
unicast11->Next = unicast12 =
tor_malloc_zero(sizeof(IP_ADAPTER_UNICAST_ADDRESS));
sockaddr_test2 = sockaddr_in_from_string("93.95.227.222", NULL);
unicast12->Address.lpSockaddr = (LPSOCKADDR)sockaddr_test2;
addrs1->Next = addrs2 =
tor_malloc_zero(sizeof(IP_ADAPTER_ADDRESSES));
addrs2->FirstUnicastAddress =
unicast21 = tor_malloc_zero(sizeof(IP_ADAPTER_UNICAST_ADDRESS));
sockaddr_localhost = sockaddr_in_from_string("127.0.0.1", NULL);
unicast21->Address.lpSockaddr = (LPSOCKADDR)sockaddr_localhost;
result = ip_adapter_addresses_to_smartlist(addrs1);
tt_assert(result);
tt_assert(smartlist_len(result) == 3);
tor_addr = smartlist_get(result,0);
tor_addr_to_sockaddr(tor_addr,0,(struct sockaddr *)sockaddr_to_check,
sizeof(struct sockaddr_in));
tt_assert(sockaddr_in_are_equal(sockaddr_test1,sockaddr_to_check));
tor_addr = smartlist_get(result,1);
tor_addr_to_sockaddr(tor_addr,0,(struct sockaddr *)sockaddr_to_check,
sizeof(struct sockaddr_in));
tt_assert(sockaddr_in_are_equal(sockaddr_test2,sockaddr_to_check));
tor_addr = smartlist_get(result,2);
tor_addr_to_sockaddr(tor_addr,0,(struct sockaddr *)sockaddr_to_check,
sizeof(struct sockaddr_in));
tt_assert(sockaddr_in_are_equal(sockaddr_localhost,sockaddr_to_check));
done:
SMARTLIST_FOREACH(result, tor_addr_t *, t, tor_free(t));
smartlist_free(result);
tor_free(addrs1);
tor_free(addrs2);
tor_free(unicast11->Address.lpSockaddr);
tor_free(unicast11);
tor_free(unicast12->Address.lpSockaddr);
tor_free(unicast12);
tor_free(unicast21->Address.lpSockaddr);
tor_free(unicast21);
tor_free(sockaddr_to_check);
return;
}
#endif
#ifdef HAVE_IFCONF_TO_SMARTLIST
static void
test_address_ifreq_to_smartlist(void *arg)
{
smartlist_t *results = NULL;
const tor_addr_t *tor_addr = NULL;
struct sockaddr_in *sockaddr = NULL;
struct sockaddr_in *sockaddr_eth1 = NULL;
struct sockaddr_in *sockaddr_to_check = NULL;
struct ifconf *ifc;
struct ifreq *ifr;
struct ifreq *ifr_next;
socklen_t addr_len;
(void)arg;
sockaddr_to_check = tor_malloc(sizeof(struct sockaddr_in));
ifr = tor_malloc(sizeof(struct ifreq));
memset(ifr,0,sizeof(struct ifreq));
strlcpy(ifr->ifr_name,"lo",3);
sockaddr = (struct sockaddr_in *) &(ifr->ifr_ifru.ifru_addr);
sockaddr_in_from_string("127.0.0.1",sockaddr);
ifc = tor_malloc(sizeof(struct ifconf));
memset(ifc,0,sizeof(struct ifconf));
ifc->ifc_len = sizeof(struct ifreq);
ifc->ifc_ifcu.ifcu_req = ifr;
results = ifreq_to_smartlist(ifc->ifc_buf,ifc->ifc_len);
tt_int_op(smartlist_len(results),==,1);
tor_addr = smartlist_get(results, 0);
addr_len =
tor_addr_to_sockaddr(tor_addr,0,(struct sockaddr *)sockaddr_to_check,
sizeof(struct sockaddr_in));
tt_int_op(addr_len,==,sizeof(struct sockaddr_in));
tt_assert(sockaddr_in_are_equal(sockaddr,sockaddr_to_check));
ifr = tor_realloc(ifr,2*sizeof(struct ifreq));
ifr_next = ifr+1;
strlcpy(ifr_next->ifr_name,"eth1",5);
ifc->ifc_len = 2*sizeof(struct ifreq);
ifc->ifc_ifcu.ifcu_req = ifr;
sockaddr = (struct sockaddr_in *) &(ifr->ifr_ifru.ifru_addr);
sockaddr_eth1 = (struct sockaddr_in *) &(ifr_next->ifr_ifru.ifru_addr);
sockaddr_in_from_string("192.168.10.55",sockaddr_eth1);
SMARTLIST_FOREACH(results, tor_addr_t *, t, tor_free(t));
smartlist_free(results);
results = ifreq_to_smartlist(ifc->ifc_buf,ifc->ifc_len);
tt_int_op(smartlist_len(results),==,2);
tor_addr = smartlist_get(results, 0);
addr_len =
tor_addr_to_sockaddr(tor_addr,0,(struct sockaddr *)sockaddr_to_check,
sizeof(struct sockaddr_in));
tt_int_op(addr_len,==,sizeof(struct sockaddr_in));
tt_assert(sockaddr_in_are_equal(sockaddr,sockaddr_to_check));
tor_addr = smartlist_get(results, 1);
addr_len =
tor_addr_to_sockaddr(tor_addr,0,(struct sockaddr *)sockaddr_to_check,
sizeof(struct sockaddr_in));
tt_int_op(addr_len,==,sizeof(struct sockaddr_in));
tt_assert(sockaddr_in_are_equal(sockaddr_eth1,sockaddr_to_check));
done:
tor_free(sockaddr_to_check);
SMARTLIST_FOREACH(results, tor_addr_t *, t, tor_free(t));
smartlist_free(results);
tor_free(ifc);
tor_free(ifr);
return;
}
static void
test_address_get_if_addrs_ioctl(void *arg)
{
smartlist_t *result = NULL;
(void)arg;
result = get_interface_addresses_ioctl(LOG_ERR);
/* On an IPv6-only system, this will fail and return NULL
tt_assert(result);
*/
/* Some FreeBSD jails don't have localhost IP address. Instead, they only
* have the address assigned to the jail (whatever that may be).
* And a jail without a network connection might not have any addresses at
* all. */
if (result) {
tt_assert(!smartlist_contains_null_tor_addr(result));
/* If there are addresses, they must be IPv4 or IPv6.
* (AIX supports IPv6 from SIOCGIFCONF.) */
if (smartlist_len(result) > 0) {
tt_assert(smartlist_contains_ipv4_tor_addr(result)
|| smartlist_contains_ipv6_tor_addr(result));
}
}
done:
if (result) {
SMARTLIST_FOREACH(result, tor_addr_t *, t, tor_free(t));
smartlist_free(result);
}
return;
}
#endif
#define FAKE_SOCKET_FD (42)
static tor_socket_t
fake_open_socket(int domain, int type, int protocol)
{
(void)domain;
(void)type;
(void)protocol;
return FAKE_SOCKET_FD;
}
static int last_connected_socket_fd = 0;
static int connect_retval = 0;
static tor_socket_t
pretend_to_connect(tor_socket_t socket, const struct sockaddr *address,
socklen_t address_len)
{
(void)address;
(void)address_len;
last_connected_socket_fd = socket;
return connect_retval;
}
static struct sockaddr *mock_addr = NULL;
static int
fake_getsockname(tor_socket_t socket, struct sockaddr *address,
socklen_t *address_len)
{
socklen_t bytes_to_copy = 0;
(void) socket;
if (!mock_addr)
return -1;
if (mock_addr->sa_family == AF_INET) {
bytes_to_copy = sizeof(struct sockaddr_in);
} else if (mock_addr->sa_family == AF_INET6) {
bytes_to_copy = sizeof(struct sockaddr_in6);
} else {
return -1;
}
if (*address_len < bytes_to_copy) {
return -1;
}
memcpy(address,mock_addr,bytes_to_copy);
*address_len = bytes_to_copy;
return 0;
}
static void
test_address_udp_socket_trick_whitebox(void *arg)
{
int hack_retval;
tor_addr_t *addr_from_hack = tor_malloc_zero(sizeof(tor_addr_t));
struct sockaddr_in6 *mock_addr6;
struct sockaddr_in6 *ipv6_to_check =
tor_malloc_zero(sizeof(struct sockaddr_in6));
(void)arg;
MOCK(tor_open_socket,fake_open_socket);
MOCK(tor_connect_socket,pretend_to_connect);
MOCK(tor_getsockname,fake_getsockname);
mock_addr = tor_malloc_zero(sizeof(struct sockaddr_storage));
sockaddr_in_from_string("23.32.246.118",(struct sockaddr_in *)mock_addr);
hack_retval =
get_interface_address6_via_udp_socket_hack(LOG_DEBUG,
AF_INET, addr_from_hack);
tt_int_op(hack_retval,==,0);
tt_assert(tor_addr_eq_ipv4h(addr_from_hack, 0x1720f676));
/* Now, lets do an IPv6 case. */
memset(mock_addr,0,sizeof(struct sockaddr_storage));
mock_addr6 = (struct sockaddr_in6 *)mock_addr;
mock_addr6->sin6_family = AF_INET6;
mock_addr6->sin6_port = 0;
tor_inet_pton(AF_INET6,"2001:cdba::3257:9652",&(mock_addr6->sin6_addr));
hack_retval =
get_interface_address6_via_udp_socket_hack(LOG_DEBUG,
AF_INET6, addr_from_hack);
tt_int_op(hack_retval,==,0);
tor_addr_to_sockaddr(addr_from_hack,0,(struct sockaddr *)ipv6_to_check,
sizeof(struct sockaddr_in6));
tt_assert(sockaddr_in6_are_equal(mock_addr6,ipv6_to_check));
UNMOCK(tor_open_socket);
UNMOCK(tor_connect_socket);
UNMOCK(tor_getsockname);
done:
tor_free(ipv6_to_check);
tor_free(mock_addr);
tor_free(addr_from_hack);
return;
}
static void
test_address_udp_socket_trick_blackbox(void *arg)
{
/* We want get_interface_address6_via_udp_socket_hack() to yield
* the same valid address that get_interface_address6() returns.
* If the latter is unable to find a valid address, we want
* _hack() to fail and return-1.
*
* Furthermore, we want _hack() never to crash, even if
* get_interface_addresses_raw() is returning NULL.
*/
tor_addr_t addr4;
tor_addr_t addr4_to_check;
tor_addr_t addr6;
tor_addr_t addr6_to_check;
int retval, retval_reference;
(void)arg;
#if 0
retval_reference = get_interface_address6(LOG_DEBUG,AF_INET,&addr4);
retval = get_interface_address6_via_udp_socket_hack(LOG_DEBUG,
AF_INET,
&addr4_to_check);
tt_int_op(retval,==,retval_reference);
tt_assert( (retval == -1 && retval_reference == -1) ||
(tor_addr_compare(&addr4,&addr4_to_check,CMP_EXACT) == 0) );
retval_reference = get_interface_address6(LOG_DEBUG,AF_INET6,&addr6);
retval = get_interface_address6_via_udp_socket_hack(LOG_DEBUG,
AF_INET6,
&addr6_to_check);
tt_int_op(retval,==,retval_reference);
tt_assert( (retval == -1 && retval_reference == -1) ||
(tor_addr_compare(&addr6,&addr6_to_check,CMP_EXACT) == 0) );
#else
/* Both of the blackbox test cases fail horribly if:
* * The host has no external addreses.
* * There are multiple interfaces with either AF_INET or AF_INET6.
* * The last address isn't the one associated with the default route.
*
* The tests SHOULD be re-enabled when #12377 is fixed correctly, but till
* then this fails a lot, in situations we expect failures due to knowing
* about the code being broken.
*/
(void)addr4_to_check;
(void)addr6_to_check;
(void)addr6;
(void) retval_reference;
#endif
/* When family is neither AF_INET nor AF_INET6, we want _hack to
* fail and return -1.
*/
retval = get_interface_address6_via_udp_socket_hack(LOG_DEBUG,
AF_INET+AF_INET6,&addr4);
tt_assert(retval == -1);
done:
return;
}
static void
test_address_get_if_addrs_list_internal(void *arg)
{
smartlist_t *results = NULL;
(void)arg;
results = get_interface_address_list(LOG_ERR, 1);
tt_assert(results != NULL);
/* When the network is down, a system might not have any non-local
* non-multicast addresseses, not even internal ones.
* Unit tests shouldn't fail because of this. */
tt_int_op(smartlist_len(results),>=,0);
tt_assert(!smartlist_contains_localhost_tor_addr(results));
tt_assert(!smartlist_contains_multicast_tor_addr(results));
/* The list may or may not contain internal addresses */
tt_assert(!smartlist_contains_null_tor_addr(results));
/* if there are any addresses, they must be IPv4 */
if (smartlist_len(results) > 0) {
tt_assert(smartlist_contains_ipv4_tor_addr(results));
}
tt_assert(!smartlist_contains_ipv6_tor_addr(results));
done:
free_interface_address_list(results);
return;
}
static void
test_address_get_if_addrs_list_no_internal(void *arg)
{
smartlist_t *results = NULL;
(void)arg;
results = get_interface_address_list(LOG_ERR, 0);
tt_assert(results != NULL);
/* Work even on systems with only internal IPv4 addresses */
tt_int_op(smartlist_len(results),>=,0);
tt_assert(!smartlist_contains_localhost_tor_addr(results));
tt_assert(!smartlist_contains_multicast_tor_addr(results));
tt_assert(!smartlist_contains_internal_tor_addr(results));
tt_assert(!smartlist_contains_null_tor_addr(results));
/* if there are any addresses, they must be IPv4 */
if (smartlist_len(results) > 0) {
tt_assert(smartlist_contains_ipv4_tor_addr(results));
}
tt_assert(!smartlist_contains_ipv6_tor_addr(results));
done:
free_interface_address_list(results);
return;
}
static void
test_address_get_if_addrs6_list_internal(void *arg)
{
smartlist_t *results = NULL;
(void)arg;
results = get_interface_address6_list(LOG_ERR, AF_INET6, 1);
tt_assert(results != NULL);
/* Work even on systems without IPv6 interfaces */
tt_int_op(smartlist_len(results),>=,0);
tt_assert(!smartlist_contains_localhost_tor_addr(results));
tt_assert(!smartlist_contains_multicast_tor_addr(results));
/* The list may or may not contain internal addresses */
tt_assert(!smartlist_contains_null_tor_addr(results));
/* if there are any addresses, they must be IPv6 */
tt_assert(!smartlist_contains_ipv4_tor_addr(results));
if (smartlist_len(results) > 0) {
tt_assert(smartlist_contains_ipv6_tor_addr(results));
}
done:
free_interface_address6_list(results);
return;
}
static void
test_address_get_if_addrs6_list_no_internal(void *arg)
{
smartlist_t *results = NULL;
(void)arg;
results = get_interface_address6_list(LOG_ERR, AF_INET6, 0);
tt_assert(results != NULL);
/* Work even on systems without IPv6 interfaces */
tt_int_op(smartlist_len(results),>=,0);
tt_assert(!smartlist_contains_localhost_tor_addr(results));
tt_assert(!smartlist_contains_multicast_tor_addr(results));
tt_assert(!smartlist_contains_internal_tor_addr(results));
tt_assert(!smartlist_contains_null_tor_addr(results));
/* if there are any addresses, they must be IPv6 */
tt_assert(!smartlist_contains_ipv4_tor_addr(results));
if (smartlist_len(results) > 0) {
tt_assert(smartlist_contains_ipv6_tor_addr(results));
}
done:
free_interface_address6_list(results);
return;
}
static int called_get_interface_addresses_raw = 0;
static smartlist_t *
mock_get_interface_addresses_raw_fail(int severity)
{
(void)severity;
called_get_interface_addresses_raw++;
return smartlist_new();
}
static int called_get_interface_address6_via_udp_socket_hack = 0;
static int
mock_get_interface_address6_via_udp_socket_hack_fail(int severity,
sa_family_t family,
tor_addr_t *addr)
{
(void)severity;
(void)family;
(void)addr;
called_get_interface_address6_via_udp_socket_hack++;
return -1;
}
static void
test_address_get_if_addrs_internal_fail(void *arg)
{
smartlist_t *results1 = NULL, *results2 = NULL;
int rv = 0;
uint32_t ipv4h_addr = 0;
tor_addr_t ipv6_addr;
memset(&ipv6_addr, 0, sizeof(tor_addr_t));
(void)arg;
MOCK(get_interface_addresses_raw,
mock_get_interface_addresses_raw_fail);
MOCK(get_interface_address6_via_udp_socket_hack,
mock_get_interface_address6_via_udp_socket_hack_fail);
results1 = get_interface_address6_list(LOG_ERR, AF_INET6, 1);
tt_assert(results1 != NULL);
tt_int_op(smartlist_len(results1),==,0);
results2 = get_interface_address_list(LOG_ERR, 1);
tt_assert(results2 != NULL);
tt_int_op(smartlist_len(results2),==,0);
rv = get_interface_address6(LOG_ERR, AF_INET6, &ipv6_addr);
tt_assert(rv == -1);
rv = get_interface_address(LOG_ERR, &ipv4h_addr);
tt_assert(rv == -1);
done:
UNMOCK(get_interface_addresses_raw);
UNMOCK(get_interface_address6_via_udp_socket_hack);
free_interface_address6_list(results1);
free_interface_address6_list(results2);
return;
}
static void
test_address_get_if_addrs_no_internal_fail(void *arg)
{
smartlist_t *results1 = NULL, *results2 = NULL;
(void)arg;
MOCK(get_interface_addresses_raw,
mock_get_interface_addresses_raw_fail);
MOCK(get_interface_address6_via_udp_socket_hack,
mock_get_interface_address6_via_udp_socket_hack_fail);
results1 = get_interface_address6_list(LOG_ERR, AF_INET6, 0);
tt_assert(results1 != NULL);
tt_int_op(smartlist_len(results1),==,0);
results2 = get_interface_address_list(LOG_ERR, 0);
tt_assert(results2 != NULL);
tt_int_op(smartlist_len(results2),==,0);
done:
UNMOCK(get_interface_addresses_raw);
UNMOCK(get_interface_address6_via_udp_socket_hack);
free_interface_address6_list(results1);
free_interface_address6_list(results2);
return;
}
static void
test_address_get_if_addrs(void *arg)
{
int rv;
uint32_t addr_h = 0;
tor_addr_t tor_addr;
(void)arg;
rv = get_interface_address(LOG_ERR, &addr_h);
/* When the network is down, a system might not have any non-local
* non-multicast IPv4 addresses, not even internal ones.
* Unit tests shouldn't fail because of this. */
if (rv == 0) {
tor_addr_from_ipv4h(&tor_addr, addr_h);
tt_assert(!tor_addr_is_loopback(&tor_addr));
tt_assert(!tor_addr_is_multicast(&tor_addr));
/* The address may or may not be an internal address */
tt_assert(tor_addr_is_v4(&tor_addr));
}
done:
return;
}
static void
test_address_get_if_addrs6(void *arg)
{
int rv;
tor_addr_t tor_addr;
(void)arg;
rv = get_interface_address6(LOG_ERR, AF_INET6, &tor_addr);
/* Work even on systems without IPv6 interfaces */
if (rv == 0) {
tt_assert(!tor_addr_is_loopback(&tor_addr));
tt_assert(!tor_addr_is_multicast(&tor_addr));
/* The address may or may not be an internal address */
tt_assert(!tor_addr_is_v4(&tor_addr));
}
done:
return;
}
static void
test_address_tor_addr_to_in6(void *ignored)
{
(void)ignored;
tor_addr_t *a = tor_malloc_zero(sizeof(tor_addr_t));
const struct in6_addr *res;
uint8_t expected[16] = {42, 1, 2, 3, 4, 5, 6, 7, 8, 9,
10, 11, 12, 13, 14, 15};
a->family = AF_INET;
res = tor_addr_to_in6(a);
tt_assert(!res);
a->family = AF_INET6;
memcpy(a->addr.in6_addr.s6_addr, expected, 16);
res = tor_addr_to_in6(a);
tt_assert(res);
tt_mem_op(res->s6_addr, OP_EQ, expected, 16);
done:
tor_free(a);
}
static void
test_address_tor_addr_to_in(void *ignored)
{
(void)ignored;
tor_addr_t *a = tor_malloc_zero(sizeof(tor_addr_t));
const struct in_addr *res;
a->family = AF_INET6;
res = tor_addr_to_in(a);
tt_assert(!res);
a->family = AF_INET;
a->addr.in_addr.s_addr = 44;
res = tor_addr_to_in(a);
tt_assert(res);
tt_int_op(res->s_addr, OP_EQ, 44);
done:
tor_free(a);
}
static void
test_address_tor_addr_to_ipv4n(void *ignored)
{
(void)ignored;
tor_addr_t *a = tor_malloc_zero(sizeof(tor_addr_t));
uint32_t res;
a->family = AF_INET6;
res = tor_addr_to_ipv4n(a);
tt_assert(!res);
a->family = AF_INET;
a->addr.in_addr.s_addr = 43;
res = tor_addr_to_ipv4n(a);
tt_assert(res);
tt_int_op(res, OP_EQ, 43);
done:
tor_free(a);
}
static void
test_address_tor_addr_to_mapped_ipv4h(void *ignored)
{
(void)ignored;
tor_addr_t *a = tor_malloc_zero(sizeof(tor_addr_t));
uint32_t res;
uint8_t toset[16] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 0, 0, 0, 42};
a->family = AF_INET;
res = tor_addr_to_mapped_ipv4h(a);
tt_assert(!res);
a->family = AF_INET6;
memcpy(a->addr.in6_addr.s6_addr, toset, 16);
res = tor_addr_to_mapped_ipv4h(a);
tt_assert(res);
tt_int_op(res, OP_EQ, 42);
done:
tor_free(a);
}
static void
test_address_tor_addr_eq_ipv4h(void *ignored)
{
(void)ignored;
tor_addr_t *a = tor_malloc_zero(sizeof(tor_addr_t));
int res;
a->family = AF_INET6;
res = tor_addr_eq_ipv4h(a, 42);
tt_assert(!res);
a->family = AF_INET;
a->addr.in_addr.s_addr = 52;
res = tor_addr_eq_ipv4h(a, 42);
tt_assert(!res);
a->addr.in_addr.s_addr = 52;
res = tor_addr_eq_ipv4h(a, ntohl(52));
tt_assert(res);
done:
tor_free(a);
}
#define ADDRESS_TEST(name, flags) \
{ #name, test_address_ ## name, flags, NULL, NULL }
struct testcase_t address_tests[] = {
ADDRESS_TEST(udp_socket_trick_whitebox, TT_FORK),
ADDRESS_TEST(udp_socket_trick_blackbox, TT_FORK),
ADDRESS_TEST(get_if_addrs_list_internal, 0),
ADDRESS_TEST(get_if_addrs_list_no_internal, 0),
ADDRESS_TEST(get_if_addrs6_list_internal, 0),
ADDRESS_TEST(get_if_addrs6_list_no_internal, 0),
ADDRESS_TEST(get_if_addrs_internal_fail, 0),
ADDRESS_TEST(get_if_addrs_no_internal_fail, 0),
ADDRESS_TEST(get_if_addrs, 0),
ADDRESS_TEST(get_if_addrs6, 0),
#ifdef HAVE_IFADDRS_TO_SMARTLIST
ADDRESS_TEST(get_if_addrs_ifaddrs, TT_FORK),
ADDRESS_TEST(ifaddrs_to_smartlist, 0),
#endif
#ifdef HAVE_IP_ADAPTER_TO_SMARTLIST
ADDRESS_TEST(get_if_addrs_win32, TT_FORK),
ADDRESS_TEST(ip_adapter_addresses_to_smartlist, 0),
#endif
#ifdef HAVE_IFCONF_TO_SMARTLIST
ADDRESS_TEST(get_if_addrs_ioctl, TT_FORK),
ADDRESS_TEST(ifreq_to_smartlist, 0),
#endif
ADDRESS_TEST(tor_addr_to_in6, 0),
ADDRESS_TEST(tor_addr_to_in, 0),
ADDRESS_TEST(tor_addr_to_ipv4n, 0),
ADDRESS_TEST(tor_addr_to_mapped_ipv4h, 0),
ADDRESS_TEST(tor_addr_eq_ipv4h, 0),
END_OF_TESTCASES
};
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