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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 02:25:50 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 02:25:50 +0000 |
commit | 19f4f86bfed21c5326ed2acebe1163f3a83e832b (patch) | |
tree | d59b9989ce55ed23693e80974d94c856f1c2c8b1 /src/test/test-socket-util.c | |
parent | Initial commit. (diff) | |
download | systemd-19f4f86bfed21c5326ed2acebe1163f3a83e832b.tar.xz systemd-19f4f86bfed21c5326ed2acebe1163f3a83e832b.zip |
Adding upstream version 241.upstream/241upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/test-socket-util.c')
-rw-r--r-- | src/test/test-socket-util.c | 832 |
1 files changed, 832 insertions, 0 deletions
diff --git a/src/test/test-socket-util.c b/src/test/test-socket-util.c new file mode 100644 index 0000000..07ff487 --- /dev/null +++ b/src/test/test-socket-util.c @@ -0,0 +1,832 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ + +#include <sys/types.h> +#include <unistd.h> +#include <grp.h> + +#include "alloc-util.h" +#include "async.h" +#include "escape.h" +#include "exit-status.h" +#include "fd-util.h" +#include "in-addr-util.h" +#include "io-util.h" +#include "log.h" +#include "macro.h" +#include "missing_network.h" +#include "process-util.h" +#include "socket-util.h" +#include "string-util.h" +#include "tests.h" +#include "tmpfile-util.h" +#include "util.h" + +static void test_ifname_valid(void) { + log_info("/* %s */", __func__); + + assert(ifname_valid("foo")); + assert(ifname_valid("eth0")); + + assert(!ifname_valid("0")); + assert(!ifname_valid("99")); + assert(ifname_valid("a99")); + assert(ifname_valid("99a")); + + assert(!ifname_valid(NULL)); + assert(!ifname_valid("")); + assert(!ifname_valid(" ")); + assert(!ifname_valid(" foo")); + assert(!ifname_valid("bar\n")); + assert(!ifname_valid(".")); + assert(!ifname_valid("..")); + assert(ifname_valid("foo.bar")); + assert(!ifname_valid("x:y")); + + assert(ifname_valid("xxxxxxxxxxxxxxx")); + assert(!ifname_valid("xxxxxxxxxxxxxxxx")); +} + +static void test_socket_address_parse_one(const char *in, int ret, int family, const char *expected) { + SocketAddress a; + _cleanup_free_ char *out = NULL; + int r; + + r = socket_address_parse(&a, in); + if (r >= 0) + assert_se(socket_address_print(&a, &out) >= 0); + + log_info("\"%s\" → %s → \"%s\" (expect \"%s\")", in, + r >= 0 ? "✓" : "✗", empty_to_dash(out), r >= 0 ? expected ?: in : "-"); + assert_se(r == ret); + if (r >= 0) { + assert_se(a.sockaddr.sa.sa_family == family); + assert_se(streq(out, expected ?: in)); + } +} + +#define SUN_PATH_LEN (sizeof(((struct sockaddr_un){}).sun_path)) +assert_cc(sizeof(((struct sockaddr_un){}).sun_path) == 108); + +static void test_socket_address_parse(void) { + log_info("/* %s */", __func__); + + test_socket_address_parse_one("junk", -EINVAL, 0, NULL); + test_socket_address_parse_one("192.168.1.1", -EINVAL, 0, NULL); + test_socket_address_parse_one(".168.1.1", -EINVAL, 0, NULL); + test_socket_address_parse_one("989.168.1.1", -EINVAL, 0, NULL); + test_socket_address_parse_one("192.168.1.1:65536", -ERANGE, 0, NULL); + test_socket_address_parse_one("192.168.1.1:0", -EINVAL, 0, NULL); + test_socket_address_parse_one("0", -EINVAL, 0, NULL); + test_socket_address_parse_one("65536", -ERANGE, 0, NULL); + + const int default_family = socket_ipv6_is_supported() ? AF_INET6 : AF_INET; + + test_socket_address_parse_one("65535", 0, default_family, "[::]:65535"); + + /* The checks below will pass even if ipv6 is disabled in + * kernel. The underlying glibc's inet_pton() is just a string + * parser and doesn't make any syscalls. */ + + test_socket_address_parse_one("[::1]", -EINVAL, 0, NULL); + test_socket_address_parse_one("[::1]8888", -EINVAL, 0, NULL); + test_socket_address_parse_one("::1", -EINVAL, 0, NULL); + test_socket_address_parse_one("[::1]:0", -EINVAL, 0, NULL); + test_socket_address_parse_one("[::1]:65536", -ERANGE, 0, NULL); + test_socket_address_parse_one("[a:b:1]:8888", -EINVAL, 0, NULL); + + test_socket_address_parse_one("8888", 0, default_family, "[::]:8888"); + test_socket_address_parse_one("[2001:0db8:0000:85a3:0000:0000:ac1f:8001]:8888", 0, AF_INET6, + "[2001:db8:0:85a3::ac1f:8001]:8888"); + test_socket_address_parse_one("[::1]:8888", 0, AF_INET6, NULL); + test_socket_address_parse_one("192.168.1.254:8888", 0, AF_INET, NULL); + test_socket_address_parse_one("/foo/bar", 0, AF_UNIX, NULL); + test_socket_address_parse_one("/", 0, AF_UNIX, NULL); + test_socket_address_parse_one("@abstract", 0, AF_UNIX, NULL); + + { + char aaa[SUN_PATH_LEN + 1] = "@"; + + memset(aaa + 1, 'a', SUN_PATH_LEN - 1); + char_array_0(aaa); + + test_socket_address_parse_one(aaa, -EINVAL, 0, NULL); + + aaa[SUN_PATH_LEN - 1] = '\0'; + test_socket_address_parse_one(aaa, 0, AF_UNIX, NULL); + } + + test_socket_address_parse_one("vsock:2:1234", 0, AF_VSOCK, NULL); + test_socket_address_parse_one("vsock::1234", 0, AF_VSOCK, NULL); + test_socket_address_parse_one("vsock:2:1234x", -EINVAL, 0, NULL); + test_socket_address_parse_one("vsock:2x:1234", -EINVAL, 0, NULL); + test_socket_address_parse_one("vsock:2", -EINVAL, 0, NULL); +} + +static void test_socket_print_unix_one(const char *in, size_t len_in, const char *expected) { + _cleanup_free_ char *out = NULL, *c = NULL; + + SocketAddress a = { .sockaddr = { .un = { .sun_family = AF_UNIX } }, + .size = offsetof(struct sockaddr_un, sun_path) + len_in, + .type = SOCK_STREAM, + }; + memcpy(a.sockaddr.un.sun_path, in, len_in); + + assert_se(socket_address_print(&a, &out) >= 0); + assert_se(c = cescape(in)); + log_info("\"%s\" → \"%s\" (expect \"%s\")", in, out, expected); + assert_se(streq(out, expected)); +} + +static void test_socket_print_unix(void) { + log_info("/* %s */", __func__); + + /* Some additional tests for abstract addresses which we don't parse */ + + test_socket_print_unix_one("\0\0\0\0", 4, "@\\000\\000\\000"); + test_socket_print_unix_one("@abs", 5, "@abs"); + test_socket_print_unix_one("\n", 2, "\\n"); + test_socket_print_unix_one("", 1, "<unnamed>"); + test_socket_print_unix_one("\0", 1, "<unnamed>"); + test_socket_print_unix_one("\0_________________________there's 108 characters in this string_____________________________________________", 108, + "@_________________________there\\'s 108 characters in this string_____________________________________________"); + test_socket_print_unix_one("////////////////////////////////////////////////////////////////////////////////////////////////////////////", 108, + "////////////////////////////////////////////////////////////////////////////////////////////////////////////"); + test_socket_print_unix_one("////////////////////////////////////////////////////////////////////////////////////////////////////////////", 109, + "////////////////////////////////////////////////////////////////////////////////////////////////////////////"); + test_socket_print_unix_one("\0\a\b\n\255", 6, "@\\a\\b\\n\\255\\000"); +} + +static void test_socket_address_parse_netlink(void) { + SocketAddress a; + + log_info("/* %s */", __func__); + + assert_se(socket_address_parse_netlink(&a, "junk") < 0); + assert_se(socket_address_parse_netlink(&a, "") < 0); + + assert_se(socket_address_parse_netlink(&a, "route") >= 0); + assert_se(socket_address_parse_netlink(&a, "route 10") >= 0); + assert_se(a.sockaddr.sa.sa_family == AF_NETLINK); + assert_se(a.protocol == NETLINK_ROUTE); + + /* With spaces and tabs */ + assert_se(socket_address_parse_netlink(&a, " kobject-uevent ") >= 0); + assert_se(socket_address_parse_netlink(&a, " \t kobject-uevent \t 10 \t") >= 0); + assert_se(a.sockaddr.sa.sa_family == AF_NETLINK); + assert_se(a.protocol == NETLINK_KOBJECT_UEVENT); + + assert_se(socket_address_parse_netlink(&a, "kobject-uevent\t10") >= 0); + assert_se(a.sockaddr.sa.sa_family == AF_NETLINK); + assert_se(a.protocol == NETLINK_KOBJECT_UEVENT); + + /* oss-fuzz #6884 */ + assert_se(socket_address_parse_netlink(&a, "\xff") < 0); +} + +static void test_socket_address_equal(void) { + SocketAddress a, b; + + log_info("/* %s */", __func__); + + assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0); + assert_se(socket_address_parse(&b, "192.168.1.1:888") >= 0); + assert_se(!socket_address_equal(&a, &b)); + + assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0); + assert_se(socket_address_parse(&b, "192.16.1.1:8888") >= 0); + assert_se(!socket_address_equal(&a, &b)); + + assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0); + assert_se(socket_address_parse(&b, "8888") >= 0); + assert_se(!socket_address_equal(&a, &b)); + + assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0); + assert_se(socket_address_parse(&b, "/foo/bar/") >= 0); + assert_se(!socket_address_equal(&a, &b)); + + assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0); + assert_se(socket_address_parse(&b, "192.168.1.1:8888") >= 0); + assert_se(socket_address_equal(&a, &b)); + + assert_se(socket_address_parse(&a, "/foo/bar") >= 0); + assert_se(socket_address_parse(&b, "/foo/bar") >= 0); + assert_se(socket_address_equal(&a, &b)); + + assert_se(socket_address_parse(&a, "[::1]:8888") >= 0); + assert_se(socket_address_parse(&b, "[::1]:8888") >= 0); + assert_se(socket_address_equal(&a, &b)); + + assert_se(socket_address_parse(&a, "@abstract") >= 0); + assert_se(socket_address_parse(&b, "@abstract") >= 0); + assert_se(socket_address_equal(&a, &b)); + + assert_se(socket_address_parse_netlink(&a, "firewall") >= 0); + assert_se(socket_address_parse_netlink(&b, "firewall") >= 0); + assert_se(socket_address_equal(&a, &b)); + + assert_se(socket_address_parse(&a, "vsock:2:1234") >= 0); + assert_se(socket_address_parse(&b, "vsock:2:1234") >= 0); + assert_se(socket_address_equal(&a, &b)); + assert_se(socket_address_parse(&b, "vsock:2:1235") >= 0); + assert_se(!socket_address_equal(&a, &b)); + assert_se(socket_address_parse(&b, "vsock:3:1234") >= 0); + assert_se(!socket_address_equal(&a, &b)); +} + +static void test_socket_address_get_path(void) { + SocketAddress a; + + log_info("/* %s */", __func__); + + assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0); + assert_se(!socket_address_get_path(&a)); + + assert_se(socket_address_parse(&a, "@abstract") >= 0); + assert_se(!socket_address_get_path(&a)); + + assert_se(socket_address_parse(&a, "[::1]:8888") >= 0); + assert_se(!socket_address_get_path(&a)); + + assert_se(socket_address_parse(&a, "/foo/bar") >= 0); + assert_se(streq(socket_address_get_path(&a), "/foo/bar")); + + assert_se(socket_address_parse(&a, "vsock:2:1234") >= 0); + assert_se(!socket_address_get_path(&a)); +} + +static void test_socket_address_is(void) { + SocketAddress a; + + log_info("/* %s */", __func__); + + assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0); + assert_se(socket_address_is(&a, "192.168.1.1:8888", SOCK_STREAM)); + assert_se(!socket_address_is(&a, "route", SOCK_STREAM)); + assert_se(!socket_address_is(&a, "192.168.1.1:8888", SOCK_RAW)); +} + +static void test_socket_address_is_netlink(void) { + SocketAddress a; + + log_info("/* %s */", __func__); + + assert_se(socket_address_parse_netlink(&a, "route 10") >= 0); + assert_se(socket_address_is_netlink(&a, "route 10")); + assert_se(!socket_address_is_netlink(&a, "192.168.1.1:8888")); + assert_se(!socket_address_is_netlink(&a, "route 1")); +} + +static void test_in_addr_is_null(void) { + union in_addr_union i = {}; + + log_info("/* %s */", __func__); + + assert_se(in_addr_is_null(AF_INET, &i) == true); + assert_se(in_addr_is_null(AF_INET6, &i) == true); + + i.in.s_addr = 0x1000000; + assert_se(in_addr_is_null(AF_INET, &i) == false); + assert_se(in_addr_is_null(AF_INET6, &i) == false); + + assert_se(in_addr_is_null(-1, &i) == -EAFNOSUPPORT); +} + +static void test_in_addr_prefix_intersect_one(unsigned f, const char *a, unsigned apl, const char *b, unsigned bpl, int result) { + union in_addr_union ua, ub; + + assert_se(in_addr_from_string(f, a, &ua) >= 0); + assert_se(in_addr_from_string(f, b, &ub) >= 0); + + assert_se(in_addr_prefix_intersect(f, &ua, apl, &ub, bpl) == result); +} + +static void test_in_addr_prefix_intersect(void) { + log_info("/* %s */", __func__); + + test_in_addr_prefix_intersect_one(AF_INET, "255.255.255.255", 32, "255.255.255.254", 32, 0); + test_in_addr_prefix_intersect_one(AF_INET, "255.255.255.255", 0, "255.255.255.255", 32, 1); + test_in_addr_prefix_intersect_one(AF_INET, "0.0.0.0", 0, "47.11.8.15", 32, 1); + + test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 24, "1.1.1.1", 24, 1); + test_in_addr_prefix_intersect_one(AF_INET, "2.2.2.2", 24, "1.1.1.1", 24, 0); + + test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 24, "1.1.1.127", 25, 1); + test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 24, "1.1.1.127", 26, 1); + test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 25, "1.1.1.127", 25, 1); + test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 25, "1.1.1.255", 25, 0); + + test_in_addr_prefix_intersect_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", 128, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffe", 128, 0); + test_in_addr_prefix_intersect_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", 0, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", 128, 1); + test_in_addr_prefix_intersect_one(AF_INET6, "::", 0, "beef:beef:beef:beef:beef:beef:beef:beef", 128, 1); + + test_in_addr_prefix_intersect_one(AF_INET6, "1::2", 64, "1::2", 64, 1); + test_in_addr_prefix_intersect_one(AF_INET6, "2::2", 64, "1::2", 64, 0); + + test_in_addr_prefix_intersect_one(AF_INET6, "1::1", 120, "1::007f", 121, 1); + test_in_addr_prefix_intersect_one(AF_INET6, "1::1", 120, "1::007f", 122, 1); + test_in_addr_prefix_intersect_one(AF_INET6, "1::1", 121, "1::007f", 121, 1); + test_in_addr_prefix_intersect_one(AF_INET6, "1::1", 121, "1::00ff", 121, 0); +} + +static void test_in_addr_prefix_next_one(unsigned f, const char *before, unsigned pl, const char *after) { + union in_addr_union ubefore, uafter, t; + + assert_se(in_addr_from_string(f, before, &ubefore) >= 0); + + t = ubefore; + assert_se((in_addr_prefix_next(f, &t, pl) > 0) == !!after); + + if (after) { + assert_se(in_addr_from_string(f, after, &uafter) >= 0); + assert_se(in_addr_equal(f, &t, &uafter) > 0); + } +} + +static void test_in_addr_prefix_next(void) { + log_info("/* %s */", __func__); + + test_in_addr_prefix_next_one(AF_INET, "192.168.0.0", 24, "192.168.1.0"); + test_in_addr_prefix_next_one(AF_INET, "192.168.0.0", 16, "192.169.0.0"); + test_in_addr_prefix_next_one(AF_INET, "192.168.0.0", 20, "192.168.16.0"); + + test_in_addr_prefix_next_one(AF_INET, "0.0.0.0", 32, "0.0.0.1"); + test_in_addr_prefix_next_one(AF_INET, "255.255.255.255", 32, NULL); + test_in_addr_prefix_next_one(AF_INET, "255.255.255.0", 24, NULL); + + test_in_addr_prefix_next_one(AF_INET6, "4400::", 128, "4400::0001"); + test_in_addr_prefix_next_one(AF_INET6, "4400::", 120, "4400::0100"); + test_in_addr_prefix_next_one(AF_INET6, "4400::", 127, "4400::0002"); + test_in_addr_prefix_next_one(AF_INET6, "4400::", 8, "4500::"); + test_in_addr_prefix_next_one(AF_INET6, "4400::", 7, "4600::"); + + test_in_addr_prefix_next_one(AF_INET6, "::", 128, "::1"); + + test_in_addr_prefix_next_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", 128, NULL); + test_in_addr_prefix_next_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ff00", 120, NULL); +} + +static void test_in_addr_to_string_one(int f, const char *addr) { + union in_addr_union ua; + _cleanup_free_ char *r = NULL; + + assert_se(in_addr_from_string(f, addr, &ua) >= 0); + assert_se(in_addr_to_string(f, &ua, &r) >= 0); + printf("test_in_addr_to_string_one: %s == %s\n", addr, r); + assert_se(streq(addr, r)); +} + +static void test_in_addr_to_string(void) { + log_info("/* %s */", __func__); + + test_in_addr_to_string_one(AF_INET, "192.168.0.1"); + test_in_addr_to_string_one(AF_INET, "10.11.12.13"); + test_in_addr_to_string_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"); + test_in_addr_to_string_one(AF_INET6, "::1"); + test_in_addr_to_string_one(AF_INET6, "fe80::"); +} + +static void test_in_addr_ifindex_to_string_one(int f, const char *a, int ifindex, const char *b) { + _cleanup_free_ char *r = NULL; + union in_addr_union ua, uuaa; + int ff, ifindex2; + + assert_se(in_addr_from_string(f, a, &ua) >= 0); + assert_se(in_addr_ifindex_to_string(f, &ua, ifindex, &r) >= 0); + printf("test_in_addr_ifindex_to_string_one: %s == %s\n", b, r); + assert_se(streq(b, r)); + + assert_se(in_addr_ifindex_from_string_auto(b, &ff, &uuaa, &ifindex2) >= 0); + assert_se(ff == f); + assert_se(in_addr_equal(f, &ua, &uuaa)); + assert_se(ifindex2 == ifindex || ifindex2 == 0); +} + +static void test_in_addr_ifindex_to_string(void) { + log_info("/* %s */", __func__); + + test_in_addr_ifindex_to_string_one(AF_INET, "192.168.0.1", 7, "192.168.0.1"); + test_in_addr_ifindex_to_string_one(AF_INET, "10.11.12.13", 9, "10.11.12.13"); + test_in_addr_ifindex_to_string_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", 10, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"); + test_in_addr_ifindex_to_string_one(AF_INET6, "::1", 11, "::1"); + test_in_addr_ifindex_to_string_one(AF_INET6, "fe80::", 12, "fe80::%12"); + test_in_addr_ifindex_to_string_one(AF_INET6, "fe80::", 0, "fe80::"); + test_in_addr_ifindex_to_string_one(AF_INET6, "fe80::14", 12, "fe80::14%12"); + test_in_addr_ifindex_to_string_one(AF_INET6, "fe80::15", -7, "fe80::15"); + test_in_addr_ifindex_to_string_one(AF_INET6, "fe80::16", LOOPBACK_IFINDEX, "fe80::16%1"); +} + +static void test_in_addr_ifindex_from_string_auto(void) { + int family, ifindex; + union in_addr_union ua; + + log_info("/* %s */", __func__); + /* Most in_addr_ifindex_from_string_auto() invocations have already been tested above, but let's test some more */ + + assert_se(in_addr_ifindex_from_string_auto("fe80::17", &family, &ua, &ifindex) >= 0); + assert_se(family == AF_INET6); + assert_se(ifindex == 0); + + assert_se(in_addr_ifindex_from_string_auto("fe80::18%19", &family, &ua, &ifindex) >= 0); + assert_se(family == AF_INET6); + assert_se(ifindex == 19); + + assert_se(in_addr_ifindex_from_string_auto("fe80::18%lo", &family, &ua, &ifindex) >= 0); + assert_se(family == AF_INET6); + assert_se(ifindex == LOOPBACK_IFINDEX); + + assert_se(in_addr_ifindex_from_string_auto("fe80::19%thisinterfacecantexist", &family, &ua, &ifindex) == -ENODEV); +} + +static void test_sockaddr_equal(void) { + union sockaddr_union a = { + .in.sin_family = AF_INET, + .in.sin_port = 0, + .in.sin_addr.s_addr = htobe32(INADDR_ANY), + }; + union sockaddr_union b = { + .in.sin_family = AF_INET, + .in.sin_port = 0, + .in.sin_addr.s_addr = htobe32(INADDR_ANY), + }; + union sockaddr_union c = { + .in.sin_family = AF_INET, + .in.sin_port = 0, + .in.sin_addr.s_addr = htobe32(1234), + }; + union sockaddr_union d = { + .in6.sin6_family = AF_INET6, + .in6.sin6_port = 0, + .in6.sin6_addr = IN6ADDR_ANY_INIT, + }; + union sockaddr_union e = { + .vm.svm_family = AF_VSOCK, + .vm.svm_port = 0, + .vm.svm_cid = VMADDR_CID_ANY, + }; + + log_info("/* %s */", __func__); + + assert_se(sockaddr_equal(&a, &a)); + assert_se(sockaddr_equal(&a, &b)); + assert_se(sockaddr_equal(&d, &d)); + assert_se(sockaddr_equal(&e, &e)); + assert_se(!sockaddr_equal(&a, &c)); + assert_se(!sockaddr_equal(&b, &c)); + assert_se(!sockaddr_equal(&a, &e)); +} + +static void test_sockaddr_un_len(void) { + log_info("/* %s */", __func__); + + static const struct sockaddr_un fs = { + .sun_family = AF_UNIX, + .sun_path = "/foo/bar/waldo", + }; + + static const struct sockaddr_un abstract = { + .sun_family = AF_UNIX, + .sun_path = "\0foobar", + }; + + assert_se(SOCKADDR_UN_LEN(fs) == offsetof(struct sockaddr_un, sun_path) + strlen(fs.sun_path) + 1); + assert_se(SOCKADDR_UN_LEN(abstract) == offsetof(struct sockaddr_un, sun_path) + 1 + strlen(abstract.sun_path + 1)); +} + +static void test_in_addr_is_multicast(void) { + union in_addr_union a, b; + int f; + + log_info("/* %s */", __func__); + + assert_se(in_addr_from_string_auto("192.168.3.11", &f, &a) >= 0); + assert_se(in_addr_is_multicast(f, &a) == 0); + + assert_se(in_addr_from_string_auto("224.0.0.1", &f, &a) >= 0); + assert_se(in_addr_is_multicast(f, &a) == 1); + + assert_se(in_addr_from_string_auto("FF01:0:0:0:0:0:0:1", &f, &b) >= 0); + assert_se(in_addr_is_multicast(f, &b) == 1); + + assert_se(in_addr_from_string_auto("2001:db8::c:69b:aeff:fe53:743e", &f, &b) >= 0); + assert_se(in_addr_is_multicast(f, &b) == 0); +} + +static void test_getpeercred_getpeergroups(void) { + int r; + + log_info("/* %s */", __func__); + + r = safe_fork("(getpeercred)", FORK_DEATHSIG|FORK_LOG|FORK_WAIT, NULL); + assert_se(r >= 0); + + if (r == 0) { + static const gid_t gids[] = { 3, 4, 5, 6, 7 }; + gid_t *test_gids; + size_t n_test_gids; + uid_t test_uid; + gid_t test_gid; + struct ucred ucred; + int pair[2]; + + if (geteuid() == 0) { + test_uid = 1; + test_gid = 2; + test_gids = (gid_t*) gids; + n_test_gids = ELEMENTSOF(gids); + + assert_se(setgroups(n_test_gids, test_gids) >= 0); + assert_se(setresgid(test_gid, test_gid, test_gid) >= 0); + assert_se(setresuid(test_uid, test_uid, test_uid) >= 0); + + } else { + long ngroups_max; + + test_uid = getuid(); + test_gid = getgid(); + + ngroups_max = sysconf(_SC_NGROUPS_MAX); + assert(ngroups_max > 0); + + test_gids = newa(gid_t, ngroups_max); + + r = getgroups(ngroups_max, test_gids); + assert_se(r >= 0); + n_test_gids = (size_t) r; + } + + assert_se(socketpair(AF_UNIX, SOCK_STREAM, 0, pair) >= 0); + + assert_se(getpeercred(pair[0], &ucred) >= 0); + + assert_se(ucred.uid == test_uid); + assert_se(ucred.gid == test_gid); + assert_se(ucred.pid == getpid_cached()); + + { + _cleanup_free_ gid_t *peer_groups = NULL; + + r = getpeergroups(pair[0], &peer_groups); + assert_se(r >= 0 || IN_SET(r, -EOPNOTSUPP, -ENOPROTOOPT)); + + if (r >= 0) { + assert_se((size_t) r == n_test_gids); + assert_se(memcmp(peer_groups, test_gids, sizeof(gid_t) * n_test_gids) == 0); + } + } + + safe_close_pair(pair); + _exit(EXIT_SUCCESS); + } +} + +static void test_passfd_read(void) { + static const char file_contents[] = "test contents for passfd"; + _cleanup_close_pair_ int pair[2] = { -1, -1 }; + int r; + + log_info("/* %s */", __func__); + + assert_se(socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) >= 0); + + r = safe_fork("(passfd_read)", FORK_DEATHSIG|FORK_LOG|FORK_WAIT, NULL); + assert_se(r >= 0); + + if (r == 0) { + /* Child */ + char tmpfile[] = "/tmp/test-socket-util-passfd-read-XXXXXX"; + _cleanup_close_ int tmpfd = -1; + + pair[0] = safe_close(pair[0]); + + tmpfd = mkostemp_safe(tmpfile); + assert_se(tmpfd >= 0); + assert_se(write(tmpfd, file_contents, strlen(file_contents)) == (ssize_t) strlen(file_contents)); + tmpfd = safe_close(tmpfd); + + tmpfd = open(tmpfile, O_RDONLY); + assert_se(tmpfd >= 0); + assert_se(unlink(tmpfile) == 0); + + assert_se(send_one_fd(pair[1], tmpfd, MSG_DONTWAIT) == 0); + _exit(EXIT_SUCCESS); + } + + /* Parent */ + char buf[64]; + struct iovec iov = IOVEC_INIT(buf, sizeof(buf)-1); + _cleanup_close_ int fd = -1; + + pair[1] = safe_close(pair[1]); + + assert_se(receive_one_fd_iov(pair[0], &iov, 1, MSG_DONTWAIT, &fd) == 0); + + assert_se(fd >= 0); + r = read(fd, buf, sizeof(buf)-1); + assert_se(r >= 0); + buf[r] = 0; + assert_se(streq(buf, file_contents)); +} + +static void test_passfd_contents_read(void) { + _cleanup_close_pair_ int pair[2] = { -1, -1 }; + static const char file_contents[] = "test contents in the file"; + static const char wire_contents[] = "test contents on the wire"; + int r; + + log_info("/* %s */", __func__); + + assert_se(socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) >= 0); + + r = safe_fork("(passfd_contents_read)", FORK_DEATHSIG|FORK_LOG|FORK_WAIT, NULL); + assert_se(r >= 0); + + if (r == 0) { + /* Child */ + struct iovec iov = IOVEC_INIT_STRING(wire_contents); + char tmpfile[] = "/tmp/test-socket-util-passfd-contents-read-XXXXXX"; + _cleanup_close_ int tmpfd = -1; + + pair[0] = safe_close(pair[0]); + + tmpfd = mkostemp_safe(tmpfile); + assert_se(tmpfd >= 0); + assert_se(write(tmpfd, file_contents, strlen(file_contents)) == (ssize_t) strlen(file_contents)); + tmpfd = safe_close(tmpfd); + + tmpfd = open(tmpfile, O_RDONLY); + assert_se(tmpfd >= 0); + assert_se(unlink(tmpfile) == 0); + + assert_se(send_one_fd_iov(pair[1], tmpfd, &iov, 1, MSG_DONTWAIT) > 0); + _exit(EXIT_SUCCESS); + } + + /* Parent */ + char buf[64]; + struct iovec iov = IOVEC_INIT(buf, sizeof(buf)-1); + _cleanup_close_ int fd = -1; + ssize_t k; + + pair[1] = safe_close(pair[1]); + + k = receive_one_fd_iov(pair[0], &iov, 1, MSG_DONTWAIT, &fd); + assert_se(k > 0); + buf[k] = 0; + assert_se(streq(buf, wire_contents)); + + assert_se(fd >= 0); + r = read(fd, buf, sizeof(buf)-1); + assert_se(r >= 0); + buf[r] = 0; + assert_se(streq(buf, file_contents)); +} + +static void test_receive_nopassfd(void) { + _cleanup_close_pair_ int pair[2] = { -1, -1 }; + static const char wire_contents[] = "no fd passed here"; + int r; + + log_info("/* %s */", __func__); + + assert_se(socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) >= 0); + + r = safe_fork("(receive_nopassfd)", FORK_DEATHSIG|FORK_LOG|FORK_WAIT, NULL); + assert_se(r >= 0); + + if (r == 0) { + /* Child */ + struct iovec iov = IOVEC_INIT_STRING(wire_contents); + + pair[0] = safe_close(pair[0]); + + assert_se(send_one_fd_iov(pair[1], -1, &iov, 1, MSG_DONTWAIT) > 0); + _exit(EXIT_SUCCESS); + } + + /* Parent */ + char buf[64]; + struct iovec iov = IOVEC_INIT(buf, sizeof(buf)-1); + int fd = -999; + ssize_t k; + + pair[1] = safe_close(pair[1]); + + k = receive_one_fd_iov(pair[0], &iov, 1, MSG_DONTWAIT, &fd); + assert_se(k > 0); + buf[k] = 0; + assert_se(streq(buf, wire_contents)); + + /* no fd passed here, confirm it was reset */ + assert_se(fd == -1); +} + +static void test_send_nodata_nofd(void) { + _cleanup_close_pair_ int pair[2] = { -1, -1 }; + int r; + + log_info("/* %s */", __func__); + + assert_se(socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) >= 0); + + r = safe_fork("(send_nodata_nofd)", FORK_DEATHSIG|FORK_LOG|FORK_WAIT, NULL); + assert_se(r >= 0); + + if (r == 0) { + /* Child */ + pair[0] = safe_close(pair[0]); + + assert_se(send_one_fd_iov(pair[1], -1, NULL, 0, MSG_DONTWAIT) == -EINVAL); + _exit(EXIT_SUCCESS); + } + + /* Parent */ + char buf[64]; + struct iovec iov = IOVEC_INIT(buf, sizeof(buf)-1); + int fd = -999; + ssize_t k; + + pair[1] = safe_close(pair[1]); + + k = receive_one_fd_iov(pair[0], &iov, 1, MSG_DONTWAIT, &fd); + /* recvmsg() will return errno EAGAIN if nothing was sent */ + assert_se(k == -EAGAIN); + + /* receive_one_fd_iov returned error, so confirm &fd wasn't touched */ + assert_se(fd == -999); +} + +static void test_send_emptydata(void) { + _cleanup_close_pair_ int pair[2] = { -1, -1 }; + int r; + + log_info("/* %s */", __func__); + + assert_se(socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) >= 0); + + r = safe_fork("(send_emptydata)", FORK_DEATHSIG|FORK_LOG|FORK_WAIT, NULL); + assert_se(r >= 0); + + if (r == 0) { + /* Child */ + struct iovec iov = IOVEC_INIT_STRING(""); /* zero-length iov */ + assert_se(iov.iov_len == 0); + + pair[0] = safe_close(pair[0]); + + /* This will succeed, since iov is set. */ + assert_se(send_one_fd_iov(pair[1], -1, &iov, 1, MSG_DONTWAIT) == 0); + _exit(EXIT_SUCCESS); + } + + /* Parent */ + char buf[64]; + struct iovec iov = IOVEC_INIT(buf, sizeof(buf)-1); + int fd = -999; + ssize_t k; + + pair[1] = safe_close(pair[1]); + + k = receive_one_fd_iov(pair[0], &iov, 1, MSG_DONTWAIT, &fd); + /* receive_one_fd_iov() returns -EIO if an fd is not found and no data was returned. */ + assert_se(k == -EIO); + + /* receive_one_fd_iov returned error, so confirm &fd wasn't touched */ + assert_se(fd == -999); +} + +int main(int argc, char *argv[]) { + test_setup_logging(LOG_DEBUG); + + test_ifname_valid(); + + test_socket_address_parse(); + test_socket_print_unix(); + test_socket_address_parse_netlink(); + test_socket_address_equal(); + test_socket_address_get_path(); + test_socket_address_is(); + test_socket_address_is_netlink(); + + test_in_addr_is_null(); + test_in_addr_prefix_intersect(); + test_in_addr_prefix_next(); + test_in_addr_to_string(); + test_in_addr_ifindex_to_string(); + test_in_addr_ifindex_from_string_auto(); + + test_sockaddr_equal(); + + test_sockaddr_un_len(); + + test_in_addr_is_multicast(); + + test_getpeercred_getpeergroups(); + + test_passfd_read(); + test_passfd_contents_read(); + test_receive_nopassfd(); + test_send_nodata_nofd(); + test_send_emptydata(); + + return 0; +} |