nss/test-netdb.c

   1 /* Copyright (C) 1998, 1999 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 /*
  21   Testing of some network related lookup functions.
  22   The system databases looked up are:
  23   - /etc/services
  24   - /etc/hosts
  25   - /etc/networks
  26   - /etc/protocols
  27   - /etc/rpc
  28   The tests try to be fairly generic and simple so that they work on
  29   every possible setup (and might therefore not detect some possible
  30   errors).
  31 */
  32
  33 #include <netdb.h>
  34 #include <rpc/netdb.h>
  35 #include <stdio.h>
  36 #include <arpa/inet.h>
  37 #include <netinet/in.h>
  38 #include <sys/param.h>
  39 #include <sys/socket.h>
  40 #include <unistd.h>
  41 #include "nss.h"
  42
  43 /*
  44   The following define is necessary for glibc 2.0.6
  45 */
  46 #ifndef INET6_ADDRSTRLEN
  47 # define INET6_ADDRSTRLEN 46
  48 #endif
  49
  50 int error_count;
  51
  52 void
  53 output_servent (const char *call, struct servent *sptr)
  54 {
  55   char **pptr;
  56
  57   if (sptr == NULL)
  58     printf ("Call: %s returned NULL\n", call);
  59   else
  60     {
  61       printf ("Call: %s, returned: s_name: %s, s_port: %d, s_proto: %s\n",
  62               call, sptr->s_name, ntohs(sptr->s_port), sptr->s_proto);
  63       for (pptr = sptr->s_aliases; *pptr != NULL; pptr++)
  64         printf ("  alias: %s\n", *pptr);
  65     }
  66 }
  67
  68
  69 void
  70 test_services (void)
  71 {
  72   struct servent *sptr;
  73
  74   sptr = getservbyname ("domain", "tcp");
  75   output_servent ("getservbyname (\"domain\", \"tcp\")", sptr);
  76
  77   sptr = getservbyname ("domain", "udp");
  78   output_servent ("getservbyname (\"domain\", \"udp\")", sptr);
  79
  80   sptr = getservbyname ("domain", NULL);
  81   output_servent ("getservbyname (\"domain\", NULL)", sptr);
  82
  83   sptr = getservbyname ("not-existant", NULL);
  84   output_servent ("getservbyname (\"not-existant\", NULL)", sptr);
  85
  86   /* This shouldn't return anything.  */
  87   sptr = getservbyname ("", "");
  88   output_servent ("getservbyname (\"\", \"\")", sptr);
  89
  90   sptr = getservbyname ("", "tcp");
  91   output_servent ("getservbyname (\"\", \"tcp\")", sptr);
  92
  93   sptr = getservbyport (htons(53), "tcp");
  94   output_servent ("getservbyport (htons(53), \"tcp\")", sptr);
  95
  96   sptr = getservbyport (htons(53), NULL);
  97   output_servent ("getservbyport (htons(53), NULL)", sptr);
  98
  99   sptr = getservbyport (htons(1), "udp"); /* shouldn't exist */
 100   output_servent ("getservbyport (htons(1), \"udp\")", sptr);
 101
 102   setservent (0);
 103   do
 104     {
 105       sptr = getservent ();
 106       output_servent ("getservent ()", sptr);
 107     }
 108   while (sptr != NULL);
 109   endservent ();
 110 }
 111
 112
 113 void
 114 output_hostent (const char *call, struct hostent *hptr)
 115 {
 116   char **pptr;
 117   char buf[INET6_ADDRSTRLEN];
 118
 119   if (hptr == NULL)
 120     printf ("Call: %s returned NULL\n", call);
 121   else
 122     {
 123       printf ("Call: %s returned: name: %s, addr_type: %d\n",
 124               call, hptr->h_name, hptr->h_addrtype);
 125       if (hptr->h_aliases)
 126         for (pptr = hptr->h_aliases; *pptr != NULL; pptr++)
 127           printf ("  alias: %s\n", *pptr);
 128
 129       for (pptr = hptr->h_addr_list; *pptr != NULL; pptr++)
 130         printf ("  ip: %s\n",
 131                 inet_ntop (hptr->h_addrtype, *pptr, buf, sizeof (buf)));
 132     }
 133 }
 134
 135 void
 136 test_hosts (void)
 137 {
 138   struct hostent *hptr1, *hptr2;
 139   char name[MAXHOSTNAMELEN];
 140   size_t namelen = sizeof(name);
 141   struct in_addr ip;
 142
 143   hptr1 = gethostbyname ("localhost");
 144   hptr2 = gethostbyname ("LocalHost");
 145   if (hptr1 != NULL || hptr2 != NULL)
 146     {
 147       if (hptr1 == NULL)
 148         {
 149           printf ("localhost not found - but LocalHost found:-(\n");
 150           ++error_count;
 151         }
 152       else if (hptr2 == NULL)
 153         {
 154           printf ("LocalHost not found - but localhost found:-(\n");
 155           ++error_count;
 156         }
 157       else if (strcmp (hptr1->h_name, hptr2->h_name) != 0)
 158         {
 159           printf ("localhost and LocalHost have different canoncial name\n");
 160           printf ("gethostbyname (\"localhost\")->%s\n", hptr1->h_name);
 161           printf ("gethostbyname (\"LocalHost\")->%s\n", hptr2->h_name);
 162           ++error_count;
 163         }
 164       else
 165         output_hostent ("gethostbyname(\"localhost\")", hptr1);
 166     }
 167
 168   hptr1 = gethostbyname ("127.0.0.1");
 169   output_hostent ("gethostbyname (\"127.0.0.1\")", hptr1);
 170
 171   hptr1 = gethostbyname ("10.1234");
 172   output_hostent ("gethostbyname (\"10.1234\")", hptr1);
 173
 174   hptr1 = gethostbyname2 ("localhost", AF_INET);
 175   output_hostent ("gethostbyname2 (\"localhost\", AF_INET)", hptr1);
 176
 177   if (gethostname (name, namelen) == 0)
 178     {
 179       printf ("Hostname: %s\n", name);
 180       hptr1 = gethostbyname (name);
 181       output_hostent ("gethostbyname (gethostname(...))", hptr1);
 182     }
 183
 184   ip.s_addr = htonl (INADDR_LOOPBACK);
 185   hptr1 = gethostbyaddr ((char *)&ip, sizeof(ip), AF_INET);
 186   if (hptr1 != NULL)
 187     {
 188       printf ("official name of 127.0.0.1: %s\n", hptr1->h_name);
 189     }
 190
 191   sethostent (0);
 192   do
 193     {
 194       hptr1 = gethostent ();
 195       output_hostent ("gethostent ()", hptr1);
 196     }
 197   while (hptr1 != NULL);
 198   endhostent ();
 199
 200 }
 201
 202
 203 void
 204 output_netent (const char *call, struct netent *nptr)
 205 {
 206   char **pptr;
 207
 208   if (nptr == NULL)
 209     printf ("Call: %s returned NULL\n", call);
 210   else
 211     {
 212       struct in_addr ip;
 213
 214       ip.s_addr = htonl(nptr->n_net);
 215       printf ("Call: %s, returned: n_name: %s, network_number: %s\n",
 216               call, nptr->n_name, inet_ntoa (ip));
 217
 218       for (pptr = nptr->n_aliases; *pptr != NULL; pptr++)
 219         printf ("  alias: %s\n", *pptr);
 220     }
 221 }
 222
 223 void
 224 test_network (void)
 225 {
 226   struct netent *nptr;
 227   u_int32_t ip;
 228
 229   /*
 230      This test needs the following line in /etc/networks:
 231      loopback        127.0.0.0
 232   */
 233   nptr = getnetbyname ("loopback");
 234   output_netent ("getnetbyname (\"loopback\")",nptr);
 235
 236   nptr = getnetbyname ("LoopBACK");
 237   output_netent ("getnetbyname (\"LoopBACK\")",nptr);
 238
 239   ip = inet_network ("127.0.0.0");
 240   nptr = getnetbyaddr (ip, AF_INET);
 241   output_netent ("getnetbyaddr (inet_network (\"127.0.0.0\"), AF_INET)",nptr);
 242
 243   setnetent (0);
 244   do
 245     {
 246       nptr = getnetent ();
 247       output_netent ("getnetent ()", nptr);
 248     }
 249   while (nptr != NULL);
 250   endnetent ();
 251 }
 252
 253
 254 void
 255 output_protoent (const char *call, struct protoent *prptr)
 256 {
 257   char **pptr;
 258
 259   if (prptr == NULL)
 260     printf ("Call: %s returned NULL\n", call);
 261   else
 262     {
 263       printf ("Call: %s, returned: p_name: %s, p_proto: %d\n",
 264               call, prptr->p_name, prptr->p_proto);
 265       for (pptr = prptr->p_aliases; *pptr != NULL; pptr++)
 266         printf ("  alias: %s\n", *pptr);
 267     }
 268 }
 269
 270
 271 void
 272 test_protocols (void)
 273 {
 274   struct protoent *prptr;
 275
 276   prptr = getprotobyname ("IP");
 277   output_protoent ("getprotobyname (\"IP\")", prptr);
 278
 279   prptr = getprotobynumber (1);
 280   output_protoent ("getprotobynumber (1)", prptr);
 281
 282   setprotoent (0);
 283   do
 284     {
 285       prptr = getprotoent ();
 286       output_protoent ("getprotoent ()", prptr);
 287     }
 288   while (prptr != NULL);
 289   endprotoent ();
 290 }
 291
 292
 293 void
 294 output_rpcent (const char *call, struct rpcent *rptr)
 295 {
 296   char **pptr;
 297
 298   if (rptr == NULL)
 299     printf ("Call: %s returned NULL\n", call);
 300   else
 301     {
 302       printf ("Call: %s, returned: r_name: %s, r_number: %d\n",
 303                 call, rptr->r_name, rptr->r_number);
 304       for (pptr = rptr->r_aliases; *pptr != NULL; pptr++)
 305         printf ("  alias: %s\n", *pptr);
 306     }
 307 }
 308
 309 void
 310 test_rpc (void)
 311 {
 312   struct rpcent *rptr;
 313
 314   rptr = getrpcbyname ("portmap");
 315   output_rpcent ("getrpcyname (\"portmap\")", rptr);
 316
 317   rptr = getrpcbynumber (100000);
 318   output_rpcent ("getrpcbynumber (100000)", rptr);
 319
 320   setrpcent (0);
 321   do
 322     {
 323       rptr = getrpcent ();
 324       output_rpcent ("getrpcent ()", rptr);
 325     }
 326   while (rptr != NULL);
 327   endrpcent ();
 328 }
 329
 330 /*
 331   Override /etc/nsswitch.conf for this program.
 332   This is mainly useful for developers
 333 */
 334 void
 335 setdb (const char *dbname)
 336 {
 337   if (strcmp ("db", dbname))
 338       {
 339         /*
 340           db is not implemented for hosts, networks
 341         */
 342         __nss_configure_lookup ("hosts", dbname);
 343         __nss_configure_lookup ("networks", dbname);
 344       }
 345   __nss_configure_lookup ("protocols", dbname);
 346   __nss_configure_lookup ("rpc", dbname);
 347   __nss_configure_lookup ("services", dbname);
 348 }
 349
 350
 351 int
 352 main (void)
 353 {
 354   /*
 355     setdb ("db");
 356   */
 357
 358   test_hosts ();
 359   test_network ();
 360   test_protocols ();
 361   test_rpc ();
 362   test_services ();
 363
 364   if (error_count)
 365     printf ("\n %d errors occurred!\n", error_count);
 366   else
 367     printf ("No visible errors occurred!\n");
 368
 369   exit (error_count);
 370 }