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Link GetAdaptersAddresses, rather than loading it on-demand.

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This function has been present since Windows XP.
This commit is contained in:
Nick Mathewson 2018-06-27 09:09:10 -04:00
parent 42b3caa6ad
commit 3930416dec
6 changed files with 22 additions and 40 deletions
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4
changes/iphplapi Normal file
View File

@ -0,0 +1,4 @@
o Removed features:
- Tor no longer attempts to run on Windows environments without the
GetAdaptersAddresses() function. This function has existed since
Windows XP, which is itself already older than we support.

29
src/lib/net/address.c
View File

@ -1479,17 +1479,7 @@ ip_adapter_addresses_to_smartlist(const IP_ADAPTER_ADDRESSES *addresses)
STATIC smartlist_t *
get_interface_addresses_win32(int severity, sa_family_t family)
{
/*
XXXX We can assume that this function exists now; we can't
XXXX provide backward compatibility to pre-windows-XP.
*/
/* Windows XP began to provide GetAdaptersAddresses. Windows 2000 had a
"GetAdaptersInfo", but that's deprecated; let's just try
GetAdaptersAddresses and fall back to connect+getsockname.
*/
HANDLE lib = load_windows_system_library(TEXT("iphlpapi.dll"));
smartlist_t *result = NULL;
GetAdaptersAddresses_fn_t fn;
ULONG size, res;
IP_ADAPTER_ADDRESSES *addresses = NULL;
@ -1499,27 +1489,16 @@ get_interface_addresses_win32(int severity, sa_family_t family)
GAA_FLAG_SKIP_MULTICAST | \
GAA_FLAG_SKIP_DNS_SERVER)
if (!lib) {
log_fn(severity, LD_NET, "Unable to load iphlpapi.dll");
goto done;
}
if (!(fn = (GetAdaptersAddresses_fn_t)
GetProcAddress(lib, "GetAdaptersAddresses"))) {
log_fn(severity, LD_NET, "Unable to obtain pointer to "
"GetAdaptersAddresses");
goto done;
}
/* Guess how much space we need. */
size = 15*1024;
addresses = tor_malloc(size);
res = fn(family, FLAGS, NULL, addresses, &size);
/* Exists in windows XP and later. */
res = GetAdaptersAddresses(family, FLAGS, NULL, addresses, &size);
if (res == ERROR_BUFFER_OVERFLOW) {
/* we didn't guess that we needed enough space; try again */
tor_free(addresses);
addresses = tor_malloc(size);
res = fn(AF_UNSPEC, FLAGS, NULL, addresses, &size);
res = GetAdaptersAddresses(AF_UNSPEC, FLAGS, NULL, addresses, &size);
}
if (res != NO_ERROR) {
log_fn(severity, LD_NET, "GetAdaptersAddresses failed (result: %lu)", res);
@ -1529,8 +1508,6 @@ get_interface_addresses_win32(int severity, sa_family_t family)
result = ip_adapter_addresses_to_smartlist(addresses);
done:
if (lib)
FreeLibrary(lib);
tor_free(addresses);
return result;
}

5
src/or/include.am
View File

@ -162,7 +162,7 @@ src_or_tor_LDFLAGS = @TOR_LDFLAGS_zlib@ @TOR_LDFLAGS_openssl@ @TOR_LDFLAGS_libev
src_or_tor_LDADD = $(TOR_INTERNAL_LIBS) \
$(rust_ldadd) \
@TOR_ZLIB_LIBS@ @TOR_LIB_MATH@ @TOR_LIBEVENT_LIBS@ @TOR_OPENSSL_LIBS@ \
@TOR_LIB_WS32@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@ \
@TOR_LIB_WS32@ @TOR_LIB_IPHLPAPI@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@ \
@CURVE25519_LIBS@ @TOR_SYSTEMD_LIBS@ \
@TOR_LZMA_LIBS@ @TOR_ZSTD_LIBS@
@ -173,7 +173,8 @@ src_or_tor_cov_CFLAGS = $(AM_CFLAGS) $(TEST_CFLAGS)
src_or_tor_cov_LDFLAGS = @TOR_LDFLAGS_zlib@ @TOR_LDFLAGS_openssl@ @TOR_LDFLAGS_libevent@
src_or_tor_cov_LDADD = $(TOR_INTERNAL_TESTING_LIBS) \
@TOR_ZLIB_LIBS@ @TOR_LIB_MATH@ @TOR_LIBEVENT_LIBS@ @TOR_OPENSSL_LIBS@ \
@TOR_LIB_WS32@ @TOR_LIB_GDI@ @CURVE25519_LIBS@ @TOR_SYSTEMD_LIBS@ \
@TOR_LIB_WS32@ @TOR_LIB_IPHLPAPI@ @TOR_LIB_GDI@ \
@CURVE25519_LIBS@ @TOR_SYSTEMD_LIBS@ \
@TOR_LZMA_LIBS@ @TOR_ZSTD_LIBS@
endif

2
src/test/fuzz/include.am
View File

@ -11,7 +11,7 @@ FUZZING_LIBS = \
$(rust_ldadd) \
@TOR_ZLIB_LIBS@ @TOR_LIB_MATH@ \
@TOR_LIBEVENT_LIBS@ @TOR_OPENSSL_LIBS@ \
@TOR_LIB_WS32@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@ @CURVE25519_LIBS@ \
@TOR_LIB_WS32@ @TOR_LIB_IPHLPAPI@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@ @CURVE25519_LIBS@ \
@TOR_SYSTEMD_LIBS@ \
@TOR_LZMA_LIBS@ \
@TOR_ZSTD_LIBS@

16
src/test/include.am
View File

@ -221,7 +221,7 @@ src_test_test_switch_id_LDADD = \
$(TOR_UTIL_TESTING_LIBS) \
$(rust_ldadd) \
@TOR_ZLIB_LIBS@ @TOR_LIB_MATH@ \
@TOR_LIB_WS32@ @TOR_LIB_USERENV@ \
@TOR_LIB_WS32@ @TOR_LIB_IPHLPAPI@ @TOR_LIB_USERENV@ \
@TOR_LZMA_LIBS@ @TOR_ZSTD_LIBS@
src_test_test_LDFLAGS = @TOR_LDFLAGS_zlib@ @TOR_LDFLAGS_openssl@ \
@ -230,7 +230,7 @@ src_test_test_LDADD = \
$(TOR_INTERNAL_TESTING_LIBS) \
$(rust_ldadd) \
@TOR_ZLIB_LIBS@ @TOR_LIB_MATH@ @TOR_LIBEVENT_LIBS@ \
@TOR_OPENSSL_LIBS@ @TOR_LIB_WS32@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@ \
@TOR_OPENSSL_LIBS@ @TOR_LIB_WS32@ @TOR_LIB_IPHLPAPI@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@ \
@CURVE25519_LIBS@ \
@TOR_SYSTEMD_LIBS@ @TOR_LZMA_LIBS@ @TOR_ZSTD_LIBS@
@ -253,7 +253,7 @@ src_test_bench_LDADD = \
$(TOR_INTERNAL_LIBS) \
$(rust_ldadd) \
@TOR_ZLIB_LIBS@ @TOR_LIB_MATH@ @TOR_LIBEVENT_LIBS@ \
@TOR_OPENSSL_LIBS@ @TOR_LIB_WS32@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@ \
@TOR_OPENSSL_LIBS@ @TOR_LIB_WS32@ @TOR_LIB_IPHLPAPI@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@ \
@CURVE25519_LIBS@ \
@TOR_SYSTEMD_LIBS@ @TOR_LZMA_LIBS@ @TOR_ZSTD_LIBS@
@ -263,7 +263,7 @@ src_test_test_workqueue_LDADD = \
$(TOR_INTERNAL_TESTING_LIBS) \
$(rust_ldadd) \
@TOR_ZLIB_LIBS@ @TOR_LIB_MATH@ @TOR_LIBEVENT_LIBS@ \
@TOR_OPENSSL_LIBS@ @TOR_LIB_WS32@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@ \
@TOR_OPENSSL_LIBS@ @TOR_LIB_WS32@ @TOR_LIB_IPHLPAPI@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@ \
@CURVE25519_LIBS@ \
@TOR_LZMA_LIBS@ @TOR_ZSTD_LIBS@
@ -275,7 +275,7 @@ src_test_test_timers_LDADD = \
$(TOR_UTIL_TESTING_LIBS) \
$(rust_ldadd) \
@TOR_ZLIB_LIBS@ @TOR_LIB_MATH@ @TOR_LIBEVENT_LIBS@ \
@TOR_OPENSSL_LIBS@ @TOR_LIB_WS32@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@ \
@TOR_OPENSSL_LIBS@ @TOR_LIB_WS32@ @TOR_LIB_IPHLPAPI@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@ \
@CURVE25519_LIBS@ \
@TOR_LZMA_LIBS@
src_test_test_timers_LDFLAGS = $(src_test_test_LDFLAGS)
@ -305,7 +305,7 @@ src_test_test_ntor_cl_LDADD = \
$(TOR_INTERNAL_LIBS) \
$(rust_ldadd) \
@TOR_ZLIB_LIBS@ @TOR_LIB_MATH@ \
@TOR_OPENSSL_LIBS@ @TOR_LIB_WS32@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@ \
@TOR_OPENSSL_LIBS@ @TOR_LIB_WS32@ @TOR_LIB_IPHLPAPI@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@ \
@CURVE25519_LIBS@ @TOR_LZMA_LIBS@
src_test_test_ntor_cl_AM_CPPFLAGS = \
$(AM_CPPFLAGS)
@ -315,7 +315,7 @@ src_test_test_hs_ntor_cl_LDFLAGS = @TOR_LDFLAGS_zlib@ @TOR_LDFLAGS_openssl@
src_test_test_hs_ntor_cl_LDADD = \
$(TOR_INTERNAL_LIBS) \
@TOR_ZLIB_LIBS@ @TOR_LIB_MATH@ \
@TOR_OPENSSL_LIBS@ @TOR_LIB_WS32@ @TOR_LIB_GDI@ @CURVE25519_LIBS@
@TOR_OPENSSL_LIBS@ @TOR_LIB_WS32@ @TOR_LIB_IPHLPAPI@ @TOR_LIB_GDI@ @CURVE25519_LIBS@
src_test_test_hs_ntor_cl_AM_CPPFLAGS = \
$(AM_CPPFLAGS)
@ -326,7 +326,7 @@ src_test_test_bt_cl_LDADD = \
$(TOR_UTIL_TESTING_LIBS) \
$(rust_ldadd) \
@TOR_LIB_MATH@ \
@TOR_LIB_WS32@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@
@TOR_LIB_WS32@ @TOR_LIB_IPHLPAPI@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@
src_test_test_bt_cl_CFLAGS = $(AM_CFLAGS) $(TEST_CFLAGS)
src_test_test_bt_cl_CPPFLAGS= $(src_test_AM_CPPFLAGS) $(TEST_CPPFLAGS)

6
src/tools/include.am
View File

@ -9,7 +9,7 @@ src_tools_tor_resolve_LDFLAGS =
src_tools_tor_resolve_LDADD = \
$(TOR_UTIL_LIBS) \
$(rust_ldadd) \
@TOR_LIB_MATH@ @TOR_LIB_WS32@ @TOR_LIB_USERENV@
@TOR_LIB_MATH@ @TOR_LIB_WS32@ @TOR_LIB_IPHLPAPI@ @TOR_LIB_USERENV@
if COVERAGE_ENABLED
src_tools_tor_cov_resolve_SOURCES = src/tools/tor-resolve.c
@ -27,7 +27,7 @@ src_tools_tor_gencert_LDADD = \
$(TOR_UTIL_LIBS) \
$(rust_ldadd) \
@TOR_LIB_MATH@ @TOR_ZLIB_LIBS@ @TOR_OPENSSL_LIBS@ \
@TOR_LIB_WS32@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@ @CURVE25519_LIBS@
@TOR_LIB_WS32@ @TOR_LIB_IPHLPAPI@ @TOR_LIB_GDI@ @TOR_LIB_USERENV@ @CURVE25519_LIBS@
if COVERAGE_ENABLED
src_tools_tor_cov_gencert_SOURCES = src/tools/tor-gencert.c
@ -38,7 +38,7 @@ src_tools_tor_cov_gencert_LDADD = \
$(TOR_CRYPTO_TESTING_LIBS) \
$(TOR_UTIL_TESTING_LIBS) \
@TOR_LIB_MATH@ @TOR_ZLIB_LIBS@ @TOR_OPENSSL_LIBS@ \
@TOR_LIB_WS32@ @TOR_LIB_GDI@ @CURVE25519_LIBS@
@TOR_LIB_WS32@ @TOR_LIB_IPHLPAPI@ @TOR_LIB_GDI@ @CURVE25519_LIBS@
endif
if BUILD_LIBTORRUNNER