src/test/test-socket-util.c

   1 /***
   2   This file is part of systemd
   3
   4   Copyright 2014 Ronny Chevalier
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include "socket-util.h"
  21 #include "in-addr-util.h"
  22 #include "util.h"
  23 #include "macro.h"
  24 #include "log.h"
  25 #include "async.h"
  26
  27 static void test_socket_address_parse(void) {
  28         SocketAddress a;
  29
  30         assert_se(socket_address_parse(&a, "junk") < 0);
  31         assert_se(socket_address_parse(&a, "192.168.1.1") < 0);
  32         assert_se(socket_address_parse(&a, ".168.1.1") < 0);
  33         assert_se(socket_address_parse(&a, "989.168.1.1") < 0);
  34         assert_se(socket_address_parse(&a, "192.168.1.1:65536") < 0);
  35         assert_se(socket_address_parse(&a, "192.168.1.1:0") < 0);
  36         assert_se(socket_address_parse(&a, "0") < 0);
  37         assert_se(socket_address_parse(&a, "65536") < 0);
  38
  39         assert_se(socket_address_parse(&a, "65535") >= 0);
  40
  41         if (socket_ipv6_is_supported()) {
  42                 assert_se(socket_address_parse(&a, "[::1]") < 0);
  43                 assert_se(socket_address_parse(&a, "[::1]8888") < 0);
  44                 assert_se(socket_address_parse(&a, "::1") < 0);
  45                 assert_se(socket_address_parse(&a, "[::1]:0") < 0);
  46                 assert_se(socket_address_parse(&a, "[::1]:65536") < 0);
  47                 assert_se(socket_address_parse(&a, "[a:b:1]:8888") < 0);
  48
  49                 assert_se(socket_address_parse(&a, "8888") >= 0);
  50                 assert_se(a.sockaddr.sa.sa_family == AF_INET6);
  51
  52                 assert_se(socket_address_parse(&a, "[2001:0db8:0000:85a3:0000:0000:ac1f:8001]:8888") >= 0);
  53                 assert_se(a.sockaddr.sa.sa_family == AF_INET6);
  54
  55                 assert_se(socket_address_parse(&a, "[::1]:8888") >= 0);
  56                 assert_se(a.sockaddr.sa.sa_family == AF_INET6);
  57         } else {
  58                 assert_se(socket_address_parse(&a, "[::1]:8888") < 0);
  59
  60                 assert_se(socket_address_parse(&a, "8888") >= 0);
  61                 assert_se(a.sockaddr.sa.sa_family == AF_INET);
  62         }
  63
  64         assert_se(socket_address_parse(&a, "192.168.1.254:8888") >= 0);
  65         assert_se(a.sockaddr.sa.sa_family == AF_INET);
  66
  67         assert_se(socket_address_parse(&a, "/foo/bar") >= 0);
  68         assert_se(a.sockaddr.sa.sa_family == AF_UNIX);
  69
  70         assert_se(socket_address_parse(&a, "@abstract") >= 0);
  71         assert_se(a.sockaddr.sa.sa_family == AF_UNIX);
  72 }
  73
  74 static void test_socket_address_parse_netlink(void) {
  75         SocketAddress a;
  76
  77         assert_se(socket_address_parse_netlink(&a, "junk") < 0);
  78         assert_se(socket_address_parse_netlink(&a, "") < 0);
  79
  80         assert_se(socket_address_parse_netlink(&a, "route") >= 0);
  81         assert_se(socket_address_parse_netlink(&a, "route 10") >= 0);
  82         assert_se(a.sockaddr.sa.sa_family == AF_NETLINK);
  83         assert_se(a.protocol == NETLINK_ROUTE);
  84 }
  85
  86 static void test_socket_address_equal(void) {
  87         SocketAddress a;
  88         SocketAddress b;
  89
  90         assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0);
  91         assert_se(socket_address_parse(&b, "192.168.1.1:888") >= 0);
  92         assert_se(!socket_address_equal(&a, &b));
  93
  94         assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0);
  95         assert_se(socket_address_parse(&b, "192.16.1.1:8888") >= 0);
  96         assert_se(!socket_address_equal(&a, &b));
  97
  98         assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0);
  99         assert_se(socket_address_parse(&b, "8888") >= 0);
 100         assert_se(!socket_address_equal(&a, &b));
 101
 102         assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0);
 103         assert_se(socket_address_parse(&b, "/foo/bar/") >= 0);
 104         assert_se(!socket_address_equal(&a, &b));
 105
 106         assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0);
 107         assert_se(socket_address_parse(&b, "192.168.1.1:8888") >= 0);
 108         assert_se(socket_address_equal(&a, &b));
 109
 110         assert_se(socket_address_parse(&a, "/foo/bar") >= 0);
 111         assert_se(socket_address_parse(&b, "/foo/bar") >= 0);
 112         assert_se(socket_address_equal(&a, &b));
 113
 114         assert_se(socket_address_parse(&a, "[::1]:8888") >= 0);
 115         assert_se(socket_address_parse(&b, "[::1]:8888") >= 0);
 116         assert_se(socket_address_equal(&a, &b));
 117
 118         assert_se(socket_address_parse(&a, "@abstract") >= 0);
 119         assert_se(socket_address_parse(&b, "@abstract") >= 0);
 120         assert_se(socket_address_equal(&a, &b));
 121
 122         assert_se(socket_address_parse_netlink(&a, "firewall") >= 0);
 123         assert_se(socket_address_parse_netlink(&b, "firewall") >= 0);
 124         assert_se(socket_address_equal(&a, &b));
 125 }
 126
 127 static void test_socket_address_get_path(void) {
 128         SocketAddress a;
 129
 130         assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0);
 131         assert_se(!socket_address_get_path(&a));
 132
 133         assert_se(socket_address_parse(&a, "@abstract") >= 0);
 134         assert_se(!socket_address_get_path(&a));
 135
 136         assert_se(socket_address_parse(&a, "[::1]:8888") >= 0);
 137         assert_se(!socket_address_get_path(&a));
 138
 139         assert_se(socket_address_parse(&a, "/foo/bar") >= 0);
 140         assert_se(streq(socket_address_get_path(&a), "/foo/bar"));
 141 }
 142
 143 static void test_socket_address_is(void) {
 144         SocketAddress a;
 145
 146         assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0);
 147         assert_se(socket_address_is(&a, "192.168.1.1:8888", SOCK_STREAM));
 148         assert_se(!socket_address_is(&a, "route", SOCK_STREAM));
 149         assert_se(!socket_address_is(&a, "192.168.1.1:8888", SOCK_RAW));
 150 }
 151
 152 static void test_socket_address_is_netlink(void) {
 153         SocketAddress a;
 154
 155         assert_se(socket_address_parse_netlink(&a, "route 10") >= 0);
 156         assert_se(socket_address_is_netlink(&a, "route 10"));
 157         assert_se(!socket_address_is_netlink(&a, "192.168.1.1:8888"));
 158         assert_se(!socket_address_is_netlink(&a, "route 1"));
 159 }
 160
 161 static void test_in_addr_is_null(void) {
 162
 163         union in_addr_union i = {};
 164
 165         assert_se(in_addr_is_null(AF_INET, &i) == true);
 166         assert_se(in_addr_is_null(AF_INET6, &i) == true);
 167
 168         i.in.s_addr = 0x1000000;
 169         assert_se(in_addr_is_null(AF_INET, &i) == false);
 170         assert_se(in_addr_is_null(AF_INET6, &i) == false);
 171
 172         assert_se(in_addr_is_null(-1, &i) == -EAFNOSUPPORT);
 173 }
 174
 175 static void test_in_addr_prefix_intersect_one(unsigned f, const char *a, unsigned apl, const char *b, unsigned bpl, int result) {
 176         union in_addr_union ua, ub;
 177
 178         assert_se(in_addr_from_string(f, a, &ua) >= 0);
 179         assert_se(in_addr_from_string(f, b, &ub) >= 0);
 180
 181         assert_se(in_addr_prefix_intersect(f, &ua, apl, &ub, bpl) == result);
 182 }
 183
 184 static void test_in_addr_prefix_intersect(void) {
 185
 186         test_in_addr_prefix_intersect_one(AF_INET, "255.255.255.255", 32, "255.255.255.254", 32, 0);
 187         test_in_addr_prefix_intersect_one(AF_INET, "255.255.255.255", 0, "255.255.255.255", 32, 1);
 188         test_in_addr_prefix_intersect_one(AF_INET, "0.0.0.0", 0, "47.11.8.15", 32, 1);
 189
 190         test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 24, "1.1.1.1", 24, 1);
 191         test_in_addr_prefix_intersect_one(AF_INET, "2.2.2.2", 24, "1.1.1.1", 24, 0);
 192
 193         test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 24, "1.1.1.127", 25, 1);
 194         test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 24, "1.1.1.127", 26, 1);
 195         test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 25, "1.1.1.127", 25, 1);
 196         test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 25, "1.1.1.255", 25, 0);
 197
 198         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);
 199         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);
 200         test_in_addr_prefix_intersect_one(AF_INET6, "::", 0, "beef:beef:beef:beef:beef:beef:beef:beef", 128, 1);
 201
 202         test_in_addr_prefix_intersect_one(AF_INET6, "1::2", 64, "1::2", 64, 1);
 203         test_in_addr_prefix_intersect_one(AF_INET6, "2::2", 64, "1::2", 64, 0);
 204
 205         test_in_addr_prefix_intersect_one(AF_INET6, "1::1", 120, "1::007f", 121, 1);
 206         test_in_addr_prefix_intersect_one(AF_INET6, "1::1", 120, "1::007f", 122, 1);
 207         test_in_addr_prefix_intersect_one(AF_INET6, "1::1", 121, "1::007f", 121, 1);
 208         test_in_addr_prefix_intersect_one(AF_INET6, "1::1", 121, "1::00ff", 121, 0);
 209 }
 210
 211 static void test_in_addr_prefix_next_one(unsigned f, const char *before, unsigned pl, const char *after) {
 212         union in_addr_union ubefore, uafter, t;
 213
 214         assert_se(in_addr_from_string(f, before, &ubefore) >= 0);
 215
 216         t = ubefore;
 217         assert_se((in_addr_prefix_next(f, &t, pl) > 0) == !!after);
 218
 219         if (after) {
 220                 assert_se(in_addr_from_string(f, after, &uafter) >= 0);
 221                 assert_se(in_addr_equal(f, &t, &uafter) > 0);
 222         }
 223 }
 224
 225 static void test_in_addr_prefix_next(void) {
 226
 227         test_in_addr_prefix_next_one(AF_INET, "192.168.0.0", 24, "192.168.1.0");
 228         test_in_addr_prefix_next_one(AF_INET, "192.168.0.0", 16, "192.169.0.0");
 229         test_in_addr_prefix_next_one(AF_INET, "192.168.0.0", 20, "192.168.16.0");
 230
 231         test_in_addr_prefix_next_one(AF_INET, "0.0.0.0", 32, "0.0.0.1");
 232         test_in_addr_prefix_next_one(AF_INET, "255.255.255.255", 32, NULL);
 233         test_in_addr_prefix_next_one(AF_INET, "255.255.255.0", 24, NULL);
 234
 235         test_in_addr_prefix_next_one(AF_INET6, "4400::", 128, "4400::0001");
 236         test_in_addr_prefix_next_one(AF_INET6, "4400::", 120, "4400::0100");
 237         test_in_addr_prefix_next_one(AF_INET6, "4400::", 127, "4400::0002");
 238         test_in_addr_prefix_next_one(AF_INET6, "4400::", 8, "4500::");
 239         test_in_addr_prefix_next_one(AF_INET6, "4400::", 7, "4600::");
 240
 241         test_in_addr_prefix_next_one(AF_INET6, "::", 128, "::1");
 242
 243         test_in_addr_prefix_next_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", 128, NULL);
 244         test_in_addr_prefix_next_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ff00", 120, NULL);
 245
 246 }
 247
 248 static void test_in_addr_to_string_one(int f, const char *addr) {
 249         union in_addr_union ua;
 250         _cleanup_free_ char *r = NULL;
 251
 252         assert_se(in_addr_from_string(f, addr, &ua) >= 0);
 253         assert_se(in_addr_to_string(f, &ua, &r) >= 0);
 254         printf("test_in_addr_to_string_one: %s == %s\n", addr, r);
 255         assert_se(streq(addr, r));
 256 }
 257
 258 static void test_in_addr_to_string(void) {
 259         test_in_addr_to_string_one(AF_INET, "192.168.0.1");
 260         test_in_addr_to_string_one(AF_INET, "10.11.12.13");
 261         test_in_addr_to_string_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff");
 262         test_in_addr_to_string_one(AF_INET6, "::1");
 263         test_in_addr_to_string_one(AF_INET6, "fe80::");
 264 }
 265
 266 static void *connect_thread(void *arg) {
 267         union sockaddr_union *sa = arg;
 268         _cleanup_close_ int fd = -1;
 269
 270         fd = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0);
 271         assert_se(fd >= 0);
 272
 273         assert_se(connect(fd, &sa->sa, sizeof(sa->in)) == 0);
 274
 275         return NULL;
 276 }
 277
 278 static void test_nameinfo_pretty(void) {
 279         _cleanup_free_ char *stdin_name = NULL, *localhost = NULL;
 280
 281         union sockaddr_union s = {
 282                 .in.sin_family = AF_INET,
 283                 .in.sin_port = 0,
 284                 .in.sin_addr.s_addr = htonl(INADDR_ANY),
 285         };
 286         int r;
 287
 288         union sockaddr_union c = {};
 289         socklen_t slen = sizeof(c.in), clen = sizeof(c.in);
 290
 291         _cleanup_close_ int sfd = -1, cfd = -1;
 292         r = getnameinfo_pretty(STDIN_FILENO, &stdin_name);
 293         log_info_errno(r, "No connection remote: %m");
 294
 295         assert_se(r < 0);
 296
 297         sfd = socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, 0);
 298         assert_se(sfd >= 0);
 299
 300         assert_se(bind(sfd, &s.sa, sizeof(s.in)) == 0);
 301
 302         /* find out the port number */
 303         assert_se(getsockname(sfd, &s.sa, &slen) == 0);
 304
 305         assert_se(listen(sfd, 1) == 0);
 306
 307         assert_se(asynchronous_job(connect_thread, &s) == 0);
 308
 309         log_debug("Accepting new connection on fd:%d", sfd);
 310         cfd = accept4(sfd, &c.sa, &clen, SOCK_CLOEXEC);
 311         assert_se(cfd >= 0);
 312
 313         r = getnameinfo_pretty(cfd, &localhost);
 314         log_info("Connection from %s", localhost);
 315         assert_se(r == 0);
 316 }
 317
 318 static void test_sockaddr_equal(void) {
 319         union sockaddr_union a = {
 320                 .in.sin_family = AF_INET,
 321                 .in.sin_port = 0,
 322                 .in.sin_addr.s_addr = htonl(INADDR_ANY),
 323         };
 324         union sockaddr_union b = {
 325                 .in.sin_family = AF_INET,
 326                 .in.sin_port = 0,
 327                 .in.sin_addr.s_addr = htonl(INADDR_ANY),
 328         };
 329         union sockaddr_union c = {
 330                 .in.sin_family = AF_INET,
 331                 .in.sin_port = 0,
 332                 .in.sin_addr.s_addr = htonl(1234),
 333         };
 334         union sockaddr_union d = {
 335                 .in6.sin6_family = AF_INET6,
 336                 .in6.sin6_port = 0,
 337                 .in6.sin6_addr = IN6ADDR_ANY_INIT,
 338         };
 339         assert_se(sockaddr_equal(&a, &a));
 340         assert_se(sockaddr_equal(&a, &b));
 341         assert_se(sockaddr_equal(&d, &d));
 342         assert_se(!sockaddr_equal(&a, &c));
 343         assert_se(!sockaddr_equal(&b, &c));
 344 }
 345
 346 int main(int argc, char *argv[]) {
 347
 348         log_set_max_level(LOG_DEBUG);
 349
 350         test_socket_address_parse();
 351         test_socket_address_parse_netlink();
 352         test_socket_address_equal();
 353         test_socket_address_get_path();
 354         test_socket_address_is();
 355         test_socket_address_is_netlink();
 356
 357         test_in_addr_is_null();
 358         test_in_addr_prefix_intersect();
 359         test_in_addr_prefix_next();
 360         test_in_addr_to_string();
 361
 362         test_nameinfo_pretty();
 363
 364         test_sockaddr_equal();
 365
 366         return 0;
 367 }