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 "async.h"
  21 #include "fd-util.h"
  22 #include "in-addr-util.h"
  23 #include "log.h"
  24 #include "macro.h"
  25 #include "socket-util.h"
  26 #include "string-util.h"
  27 #include "util.h"
  28
  29 static void test_socket_address_parse(void) {
  30         SocketAddress a;
  31
  32         assert_se(socket_address_parse(&a, "junk") < 0);
  33         assert_se(socket_address_parse(&a, "192.168.1.1") < 0);
  34         assert_se(socket_address_parse(&a, ".168.1.1") < 0);
  35         assert_se(socket_address_parse(&a, "989.168.1.1") < 0);
  36         assert_se(socket_address_parse(&a, "192.168.1.1:65536") < 0);
  37         assert_se(socket_address_parse(&a, "192.168.1.1:0") < 0);
  38         assert_se(socket_address_parse(&a, "0") < 0);
  39         assert_se(socket_address_parse(&a, "65536") < 0);
  40
  41         assert_se(socket_address_parse(&a, "65535") >= 0);
  42
  43         if (socket_ipv6_is_supported()) {
  44                 assert_se(socket_address_parse(&a, "[::1]") < 0);
  45                 assert_se(socket_address_parse(&a, "[::1]8888") < 0);
  46                 assert_se(socket_address_parse(&a, "::1") < 0);
  47                 assert_se(socket_address_parse(&a, "[::1]:0") < 0);
  48                 assert_se(socket_address_parse(&a, "[::1]:65536") < 0);
  49                 assert_se(socket_address_parse(&a, "[a:b:1]:8888") < 0);
  50
  51                 assert_se(socket_address_parse(&a, "8888") >= 0);
  52                 assert_se(a.sockaddr.sa.sa_family == AF_INET6);
  53
  54                 assert_se(socket_address_parse(&a, "[2001:0db8:0000:85a3:0000:0000:ac1f:8001]:8888") >= 0);
  55                 assert_se(a.sockaddr.sa.sa_family == AF_INET6);
  56
  57                 assert_se(socket_address_parse(&a, "[::1]:8888") >= 0);
  58                 assert_se(a.sockaddr.sa.sa_family == AF_INET6);
  59         } else {
  60                 assert_se(socket_address_parse(&a, "[::1]:8888") < 0);
  61
  62                 assert_se(socket_address_parse(&a, "8888") >= 0);
  63                 assert_se(a.sockaddr.sa.sa_family == AF_INET);
  64         }
  65
  66         assert_se(socket_address_parse(&a, "192.168.1.254:8888") >= 0);
  67         assert_se(a.sockaddr.sa.sa_family == AF_INET);
  68
  69         assert_se(socket_address_parse(&a, "/foo/bar") >= 0);
  70         assert_se(a.sockaddr.sa.sa_family == AF_UNIX);
  71
  72         assert_se(socket_address_parse(&a, "@abstract") >= 0);
  73         assert_se(a.sockaddr.sa.sa_family == AF_UNIX);
  74 }
  75
  76 static void test_socket_address_parse_netlink(void) {
  77         SocketAddress a;
  78
  79         assert_se(socket_address_parse_netlink(&a, "junk") < 0);
  80         assert_se(socket_address_parse_netlink(&a, "") < 0);
  81
  82         assert_se(socket_address_parse_netlink(&a, "route") >= 0);
  83         assert_se(socket_address_parse_netlink(&a, "route 10") >= 0);
  84         assert_se(a.sockaddr.sa.sa_family == AF_NETLINK);
  85         assert_se(a.protocol == NETLINK_ROUTE);
  86 }
  87
  88 static void test_socket_address_equal(void) {
  89         SocketAddress a;
  90         SocketAddress b;
  91
  92         assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0);
  93         assert_se(socket_address_parse(&b, "192.168.1.1:888") >= 0);
  94         assert_se(!socket_address_equal(&a, &b));
  95
  96         assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0);
  97         assert_se(socket_address_parse(&b, "192.16.1.1:8888") >= 0);
  98         assert_se(!socket_address_equal(&a, &b));
  99
 100         assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0);
 101         assert_se(socket_address_parse(&b, "8888") >= 0);
 102         assert_se(!socket_address_equal(&a, &b));
 103
 104         assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0);
 105         assert_se(socket_address_parse(&b, "/foo/bar/") >= 0);
 106         assert_se(!socket_address_equal(&a, &b));
 107
 108         assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0);
 109         assert_se(socket_address_parse(&b, "192.168.1.1:8888") >= 0);
 110         assert_se(socket_address_equal(&a, &b));
 111
 112         assert_se(socket_address_parse(&a, "/foo/bar") >= 0);
 113         assert_se(socket_address_parse(&b, "/foo/bar") >= 0);
 114         assert_se(socket_address_equal(&a, &b));
 115
 116         assert_se(socket_address_parse(&a, "[::1]:8888") >= 0);
 117         assert_se(socket_address_parse(&b, "[::1]:8888") >= 0);
 118         assert_se(socket_address_equal(&a, &b));
 119
 120         assert_se(socket_address_parse(&a, "@abstract") >= 0);
 121         assert_se(socket_address_parse(&b, "@abstract") >= 0);
 122         assert_se(socket_address_equal(&a, &b));
 123
 124         assert_se(socket_address_parse_netlink(&a, "firewall") >= 0);
 125         assert_se(socket_address_parse_netlink(&b, "firewall") >= 0);
 126         assert_se(socket_address_equal(&a, &b));
 127 }
 128
 129 static void test_socket_address_get_path(void) {
 130         SocketAddress a;
 131
 132         assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0);
 133         assert_se(!socket_address_get_path(&a));
 134
 135         assert_se(socket_address_parse(&a, "@abstract") >= 0);
 136         assert_se(!socket_address_get_path(&a));
 137
 138         assert_se(socket_address_parse(&a, "[::1]:8888") >= 0);
 139         assert_se(!socket_address_get_path(&a));
 140
 141         assert_se(socket_address_parse(&a, "/foo/bar") >= 0);
 142         assert_se(streq(socket_address_get_path(&a), "/foo/bar"));
 143 }
 144
 145 static void test_socket_address_is(void) {
 146         SocketAddress a;
 147
 148         assert_se(socket_address_parse(&a, "192.168.1.1:8888") >= 0);
 149         assert_se(socket_address_is(&a, "192.168.1.1:8888", SOCK_STREAM));
 150         assert_se(!socket_address_is(&a, "route", SOCK_STREAM));
 151         assert_se(!socket_address_is(&a, "192.168.1.1:8888", SOCK_RAW));
 152 }
 153
 154 static void test_socket_address_is_netlink(void) {
 155         SocketAddress a;
 156
 157         assert_se(socket_address_parse_netlink(&a, "route 10") >= 0);
 158         assert_se(socket_address_is_netlink(&a, "route 10"));
 159         assert_se(!socket_address_is_netlink(&a, "192.168.1.1:8888"));
 160         assert_se(!socket_address_is_netlink(&a, "route 1"));
 161 }
 162
 163 static void test_in_addr_is_null(void) {
 164
 165         union in_addr_union i = {};
 166
 167         assert_se(in_addr_is_null(AF_INET, &i) == true);
 168         assert_se(in_addr_is_null(AF_INET6, &i) == true);
 169
 170         i.in.s_addr = 0x1000000;
 171         assert_se(in_addr_is_null(AF_INET, &i) == false);
 172         assert_se(in_addr_is_null(AF_INET6, &i) == false);
 173
 174         assert_se(in_addr_is_null(-1, &i) == -EAFNOSUPPORT);
 175 }
 176
 177 static void test_in_addr_prefix_intersect_one(unsigned f, const char *a, unsigned apl, const char *b, unsigned bpl, int result) {
 178         union in_addr_union ua, ub;
 179
 180         assert_se(in_addr_from_string(f, a, &ua) >= 0);
 181         assert_se(in_addr_from_string(f, b, &ub) >= 0);
 182
 183         assert_se(in_addr_prefix_intersect(f, &ua, apl, &ub, bpl) == result);
 184 }
 185
 186 static void test_in_addr_prefix_intersect(void) {
 187
 188         test_in_addr_prefix_intersect_one(AF_INET, "255.255.255.255", 32, "255.255.255.254", 32, 0);
 189         test_in_addr_prefix_intersect_one(AF_INET, "255.255.255.255", 0, "255.255.255.255", 32, 1);
 190         test_in_addr_prefix_intersect_one(AF_INET, "0.0.0.0", 0, "47.11.8.15", 32, 1);
 191
 192         test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 24, "1.1.1.1", 24, 1);
 193         test_in_addr_prefix_intersect_one(AF_INET, "2.2.2.2", 24, "1.1.1.1", 24, 0);
 194
 195         test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 24, "1.1.1.127", 25, 1);
 196         test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 24, "1.1.1.127", 26, 1);
 197         test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 25, "1.1.1.127", 25, 1);
 198         test_in_addr_prefix_intersect_one(AF_INET, "1.1.1.1", 25, "1.1.1.255", 25, 0);
 199
 200         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);
 201         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);
 202         test_in_addr_prefix_intersect_one(AF_INET6, "::", 0, "beef:beef:beef:beef:beef:beef:beef:beef", 128, 1);
 203
 204         test_in_addr_prefix_intersect_one(AF_INET6, "1::2", 64, "1::2", 64, 1);
 205         test_in_addr_prefix_intersect_one(AF_INET6, "2::2", 64, "1::2", 64, 0);
 206
 207         test_in_addr_prefix_intersect_one(AF_INET6, "1::1", 120, "1::007f", 121, 1);
 208         test_in_addr_prefix_intersect_one(AF_INET6, "1::1", 120, "1::007f", 122, 1);
 209         test_in_addr_prefix_intersect_one(AF_INET6, "1::1", 121, "1::007f", 121, 1);
 210         test_in_addr_prefix_intersect_one(AF_INET6, "1::1", 121, "1::00ff", 121, 0);
 211 }
 212
 213 static void test_in_addr_prefix_next_one(unsigned f, const char *before, unsigned pl, const char *after) {
 214         union in_addr_union ubefore, uafter, t;
 215
 216         assert_se(in_addr_from_string(f, before, &ubefore) >= 0);
 217
 218         t = ubefore;
 219         assert_se((in_addr_prefix_next(f, &t, pl) > 0) == !!after);
 220
 221         if (after) {
 222                 assert_se(in_addr_from_string(f, after, &uafter) >= 0);
 223                 assert_se(in_addr_equal(f, &t, &uafter) > 0);
 224         }
 225 }
 226
 227 static void test_in_addr_prefix_next(void) {
 228
 229         test_in_addr_prefix_next_one(AF_INET, "192.168.0.0", 24, "192.168.1.0");
 230         test_in_addr_prefix_next_one(AF_INET, "192.168.0.0", 16, "192.169.0.0");
 231         test_in_addr_prefix_next_one(AF_INET, "192.168.0.0", 20, "192.168.16.0");
 232
 233         test_in_addr_prefix_next_one(AF_INET, "0.0.0.0", 32, "0.0.0.1");
 234         test_in_addr_prefix_next_one(AF_INET, "255.255.255.255", 32, NULL);
 235         test_in_addr_prefix_next_one(AF_INET, "255.255.255.0", 24, NULL);
 236
 237         test_in_addr_prefix_next_one(AF_INET6, "4400::", 128, "4400::0001");
 238         test_in_addr_prefix_next_one(AF_INET6, "4400::", 120, "4400::0100");
 239         test_in_addr_prefix_next_one(AF_INET6, "4400::", 127, "4400::0002");
 240         test_in_addr_prefix_next_one(AF_INET6, "4400::", 8, "4500::");
 241         test_in_addr_prefix_next_one(AF_INET6, "4400::", 7, "4600::");
 242
 243         test_in_addr_prefix_next_one(AF_INET6, "::", 128, "::1");
 244
 245         test_in_addr_prefix_next_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", 128, NULL);
 246         test_in_addr_prefix_next_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ff00", 120, NULL);
 247
 248 }
 249
 250 static void test_in_addr_to_string_one(int f, const char *addr) {
 251         union in_addr_union ua;
 252         _cleanup_free_ char *r = NULL;
 253
 254         assert_se(in_addr_from_string(f, addr, &ua) >= 0);
 255         assert_se(in_addr_to_string(f, &ua, &r) >= 0);
 256         printf("test_in_addr_to_string_one: %s == %s\n", addr, r);
 257         assert_se(streq(addr, r));
 258 }
 259
 260 static void test_in_addr_to_string(void) {
 261         test_in_addr_to_string_one(AF_INET, "192.168.0.1");
 262         test_in_addr_to_string_one(AF_INET, "10.11.12.13");
 263         test_in_addr_to_string_one(AF_INET6, "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff");
 264         test_in_addr_to_string_one(AF_INET6, "::1");
 265         test_in_addr_to_string_one(AF_INET6, "fe80::");
 266 }
 267
 268 static void *connect_thread(void *arg) {
 269         union sockaddr_union *sa = arg;
 270         _cleanup_close_ int fd = -1;
 271
 272         fd = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0);
 273         assert_se(fd >= 0);
 274
 275         assert_se(connect(fd, &sa->sa, sizeof(sa->in)) == 0);
 276
 277         return NULL;
 278 }
 279
 280 static void test_nameinfo_pretty(void) {
 281         _cleanup_free_ char *stdin_name = NULL, *localhost = NULL;
 282
 283         union sockaddr_union s = {
 284                 .in.sin_family = AF_INET,
 285                 .in.sin_port = 0,
 286                 .in.sin_addr.s_addr = htonl(INADDR_ANY),
 287         };
 288         int r;
 289
 290         union sockaddr_union c = {};
 291         socklen_t slen = sizeof(c.in), clen = sizeof(c.in);
 292
 293         _cleanup_close_ int sfd = -1, cfd = -1;
 294         r = getnameinfo_pretty(STDIN_FILENO, &stdin_name);
 295         log_info_errno(r, "No connection remote: %m");
 296
 297         assert_se(r < 0);
 298
 299         sfd = socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, 0);
 300         assert_se(sfd >= 0);
 301
 302         assert_se(bind(sfd, &s.sa, sizeof(s.in)) == 0);
 303
 304         /* find out the port number */
 305         assert_se(getsockname(sfd, &s.sa, &slen) == 0);
 306
 307         assert_se(listen(sfd, 1) == 0);
 308
 309         assert_se(asynchronous_job(connect_thread, &s) == 0);
 310
 311         log_debug("Accepting new connection on fd:%d", sfd);
 312         cfd = accept4(sfd, &c.sa, &clen, SOCK_CLOEXEC);
 313         assert_se(cfd >= 0);
 314
 315         r = getnameinfo_pretty(cfd, &localhost);
 316         log_info("Connection from %s", localhost);
 317         assert_se(r == 0);
 318 }
 319
 320 static void test_sockaddr_equal(void) {
 321         union sockaddr_union a = {
 322                 .in.sin_family = AF_INET,
 323                 .in.sin_port = 0,
 324                 .in.sin_addr.s_addr = htonl(INADDR_ANY),
 325         };
 326         union sockaddr_union b = {
 327                 .in.sin_family = AF_INET,
 328                 .in.sin_port = 0,
 329                 .in.sin_addr.s_addr = htonl(INADDR_ANY),
 330         };
 331         union sockaddr_union c = {
 332                 .in.sin_family = AF_INET,
 333                 .in.sin_port = 0,
 334                 .in.sin_addr.s_addr = htonl(1234),
 335         };
 336         union sockaddr_union d = {
 337                 .in6.sin6_family = AF_INET6,
 338                 .in6.sin6_port = 0,
 339                 .in6.sin6_addr = IN6ADDR_ANY_INIT,
 340         };
 341         assert_se(sockaddr_equal(&a, &a));
 342         assert_se(sockaddr_equal(&a, &b));
 343         assert_se(sockaddr_equal(&d, &d));
 344         assert_se(!sockaddr_equal(&a, &c));
 345         assert_se(!sockaddr_equal(&b, &c));
 346 }
 347
 348 int main(int argc, char *argv[]) {
 349
 350         log_set_max_level(LOG_DEBUG);
 351
 352         test_socket_address_parse();
 353         test_socket_address_parse_netlink();
 354         test_socket_address_equal();
 355         test_socket_address_get_path();
 356         test_socket_address_is();
 357         test_socket_address_is_netlink();
 358
 359         test_in_addr_is_null();
 360         test_in_addr_prefix_intersect();
 361         test_in_addr_prefix_next();
 362         test_in_addr_to_string();
 363
 364         test_nameinfo_pretty();
 365
 366         test_sockaddr_equal();
 367
 368         return 0;
 369 }