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