sunrpc/clnt_perr.c

   1 /*
   2  * clnt_perror.c
   3  *
   4  * Copyright (c) 2010, 2011, Oracle America, Inc.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are
   8  * met:
   9  *
  10  *     * Redistributions of source code must retain the above copyright
  11  *       notice, this list of conditions and the following disclaimer.
  12  *     * Redistributions in binary form must reproduce the above
  13  *       copyright notice, this list of conditions and the following
  14  *       disclaimer in the documentation and/or other materials
  15  *       provided with the distribution.
  16  *     * Neither the name of the "Oracle America, Inc." nor the names of its
  17  *       contributors may be used to endorse or promote products derived
  18  *       from this software without specific prior written permission.
  19  *
  20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  23  *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  24  *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  25  *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  27  *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  29  *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  30  *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33 #include <stdio.h>
  34 #include <string.h>
  35 #include <libintl.h>
  36 #include <rpc/rpc.h>
  37 #include <wchar.h>
  38 #include <libio/iolibio.h>
  39
  40 static char *auth_errmsg (enum auth_stat stat) internal_function;
  41
  42 #ifdef _RPC_THREAD_SAFE_
  43 /*
  44  * Making buf a preprocessor macro requires renaming the local
  45  * buf variable in a few functions.  Overriding a global variable
  46  * with a local variable of the same name is a bad idea, anyway.
  47  */
  48 #define buf RPC_THREAD_VARIABLE(clnt_perr_buf_s)
  49 #else
  50 static char *buf;
  51 #endif
  52
  53 /*
  54  * Print reply error info
  55  */
  56 char *
  57 clnt_sperror (CLIENT * rpch, const char *msg)
  58 {
  59   struct rpc_err e;
  60   CLNT_GETERR (rpch, &e);
  61
  62   const char *errstr = clnt_sperrno (e.re_status);
  63
  64   char chrbuf[1024];
  65   char *str;
  66   char *tmpstr;
  67   int res;
  68   switch (e.re_status)
  69     {
  70     case RPC_SUCCESS:
  71     case RPC_CANTENCODEARGS:
  72     case RPC_CANTDECODERES:
  73     case RPC_TIMEDOUT:
  74     case RPC_PROGUNAVAIL:
  75     case RPC_PROCUNAVAIL:
  76     case RPC_CANTDECODEARGS:
  77     case RPC_SYSTEMERROR:
  78     case RPC_UNKNOWNHOST:
  79     case RPC_UNKNOWNPROTO:
  80     case RPC_PMAPFAILURE:
  81     case RPC_PROGNOTREGISTERED:
  82     case RPC_FAILED:
  83       res = __asprintf (&str, "%s: %s\n", msg, errstr);
  84       break;
  85
  86     case RPC_CANTSEND:
  87     case RPC_CANTRECV:
  88       res = __asprintf (&str, "%s: %s; errno = %s\n",
  89                         msg, errstr, __strerror_r (e.re_errno,
  90                                                    chrbuf, sizeof chrbuf));
  91       break;
  92
  93     case RPC_VERSMISMATCH:
  94       res = __asprintf (&str,
  95                         _("%s: %s; low version = %lu, high version = %lu"),
  96                         msg, errstr, e.re_vers.low, e.re_vers.high);
  97       break;
  98
  99     case RPC_AUTHERROR:
 100       tmpstr = auth_errmsg (e.re_why);
 101       if (tmpstr != NULL)
 102         res = __asprintf (&str, _("%s: %s; why = %s\n"), msg, errstr, tmpstr);
 103       else
 104         res = __asprintf (&str, _("\
 105 %s: %s; why = (unknown authentication error - %d)\n"),
 106                           msg, errstr, (int) e.re_why);
 107       break;
 108
 109     case RPC_PROGVERSMISMATCH:
 110       res = __asprintf (&str,
 111                         _("%s: %s; low version = %lu, high version = %lu"),
 112                         msg, errstr, e.re_vers.low, e.re_vers.high);
 113       break;
 114
 115     default:                    /* unknown */
 116       res = __asprintf (&str, "%s: %s; s1 = %lu, s2 = %lu",
 117                         msg, errstr, e.re_lb.s1, e.re_lb.s2);
 118       break;
 119     }
 120
 121   if (res < 0)
 122     return NULL;
 123
 124   char *oldbuf = buf;
 125   buf = str;
 126   free (oldbuf);
 127
 128   return str;
 129 }
 130 libc_hidden_nolink_sunrpc (clnt_sperror, GLIBC_2_0)
 131
 132 void
 133 clnt_perror (CLIENT * rpch, const char *msg)
 134 {
 135   (void) __fxprintf (NULL, "%s", clnt_sperror (rpch, msg));
 136 }
 137 #ifdef EXPORT_RPC_SYMBOLS
 138 libc_hidden_def (clnt_perror)
 139 #else
 140 libc_hidden_nolink_sunrpc (clnt_perror, GLIBC_2_0)
 141 #endif
 142
 143
 144 struct rpc_errtab
 145 {
 146   enum clnt_stat status;
 147   unsigned int message_off;
 148 };
 149
 150 static const char rpc_errstr[] =
 151 {
 152 #define RPC_SUCCESS_IDX         0
 153   N_("RPC: Success")
 154   "\0"
 155 #define RPC_CANTENCODEARGS_IDX  (RPC_SUCCESS_IDX + sizeof "RPC: Success")
 156   N_("RPC: Can't encode arguments")
 157   "\0"
 158 #define RPC_CANTDECODERES_IDX   (RPC_CANTENCODEARGS_IDX \
 159                                  + sizeof "RPC: Can't encode arguments")
 160   N_("RPC: Can't decode result")
 161   "\0"
 162 #define RPC_CANTSEND_IDX        (RPC_CANTDECODERES_IDX \
 163                                  + sizeof "RPC: Can't decode result")
 164   N_("RPC: Unable to send")
 165   "\0"
 166 #define RPC_CANTRECV_IDX        (RPC_CANTSEND_IDX \
 167                                  + sizeof "RPC: Unable to send")
 168   N_("RPC: Unable to receive")
 169   "\0"
 170 #define RPC_TIMEDOUT_IDX        (RPC_CANTRECV_IDX \
 171                                  + sizeof "RPC: Unable to receive")
 172   N_("RPC: Timed out")
 173   "\0"
 174 #define RPC_VERSMISMATCH_IDX    (RPC_TIMEDOUT_IDX \
 175                                  + sizeof "RPC: Timed out")
 176   N_("RPC: Incompatible versions of RPC")
 177   "\0"
 178 #define RPC_AUTHERROR_IDX       (RPC_VERSMISMATCH_IDX \
 179                                  + sizeof "RPC: Incompatible versions of RPC")
 180   N_("RPC: Authentication error")
 181   "\0"
 182 #define RPC_PROGUNAVAIL_IDX             (RPC_AUTHERROR_IDX \
 183                                  + sizeof "RPC: Authentication error")
 184   N_("RPC: Program unavailable")
 185   "\0"
 186 #define RPC_PROGVERSMISMATCH_IDX (RPC_PROGUNAVAIL_IDX \
 187                                   + sizeof "RPC: Program unavailable")
 188   N_("RPC: Program/version mismatch")
 189   "\0"
 190 #define RPC_PROCUNAVAIL_IDX     (RPC_PROGVERSMISMATCH_IDX \
 191                                  + sizeof "RPC: Program/version mismatch")
 192   N_("RPC: Procedure unavailable")
 193   "\0"
 194 #define RPC_CANTDECODEARGS_IDX  (RPC_PROCUNAVAIL_IDX \
 195                                  + sizeof "RPC: Procedure unavailable")
 196   N_("RPC: Server can't decode arguments")
 197   "\0"
 198 #define RPC_SYSTEMERROR_IDX     (RPC_CANTDECODEARGS_IDX \
 199                                  + sizeof "RPC: Server can't decode arguments")
 200   N_("RPC: Remote system error")
 201   "\0"
 202 #define RPC_UNKNOWNHOST_IDX     (RPC_SYSTEMERROR_IDX \
 203                                  + sizeof "RPC: Remote system error")
 204   N_("RPC: Unknown host")
 205   "\0"
 206 #define RPC_UNKNOWNPROTO_IDX    (RPC_UNKNOWNHOST_IDX \
 207                                  + sizeof "RPC: Unknown host")
 208   N_("RPC: Unknown protocol")
 209   "\0"
 210 #define RPC_PMAPFAILURE_IDX     (RPC_UNKNOWNPROTO_IDX \
 211                                  + sizeof "RPC: Unknown protocol")
 212   N_("RPC: Port mapper failure")
 213   "\0"
 214 #define RPC_PROGNOTREGISTERED_IDX (RPC_PMAPFAILURE_IDX \
 215                                    + sizeof "RPC: Port mapper failure")
 216   N_("RPC: Program not registered")
 217   "\0"
 218 #define RPC_FAILED_IDX          (RPC_PROGNOTREGISTERED_IDX \
 219                                  + sizeof "RPC: Program not registered")
 220   N_("RPC: Failed (unspecified error)")
 221 };
 222
 223 static const struct rpc_errtab rpc_errlist[] =
 224 {
 225   { RPC_SUCCESS, RPC_SUCCESS_IDX },
 226   { RPC_CANTENCODEARGS, RPC_CANTENCODEARGS_IDX },
 227   { RPC_CANTDECODERES, RPC_CANTDECODERES_IDX },
 228   { RPC_CANTSEND, RPC_CANTSEND_IDX },
 229   { RPC_CANTRECV, RPC_CANTRECV_IDX },
 230   { RPC_TIMEDOUT, RPC_TIMEDOUT_IDX },
 231   { RPC_VERSMISMATCH, RPC_VERSMISMATCH_IDX },
 232   { RPC_AUTHERROR, RPC_AUTHERROR_IDX },
 233   { RPC_PROGUNAVAIL, RPC_PROGUNAVAIL_IDX },
 234   { RPC_PROGVERSMISMATCH, RPC_PROGVERSMISMATCH_IDX },
 235   { RPC_PROCUNAVAIL, RPC_PROCUNAVAIL_IDX },
 236   { RPC_CANTDECODEARGS, RPC_CANTDECODEARGS_IDX },
 237   { RPC_SYSTEMERROR, RPC_SYSTEMERROR_IDX },
 238   { RPC_UNKNOWNHOST, RPC_UNKNOWNHOST_IDX },
 239   { RPC_UNKNOWNPROTO, RPC_UNKNOWNPROTO_IDX },
 240   { RPC_PMAPFAILURE, RPC_PMAPFAILURE_IDX },
 241   { RPC_PROGNOTREGISTERED, RPC_PROGNOTREGISTERED_IDX },
 242   { RPC_FAILED, RPC_FAILED_IDX }
 243 };
 244
 245
 246 /*
 247  * This interface for use by clntrpc
 248  */
 249 char *
 250 clnt_sperrno (enum clnt_stat stat)
 251 {
 252   size_t i;
 253
 254   for (i = 0; i < sizeof (rpc_errlist) / sizeof (struct rpc_errtab); i++)
 255     {
 256       if (rpc_errlist[i].status == stat)
 257         {
 258           return _(rpc_errstr + rpc_errlist[i].message_off);
 259         }
 260     }
 261   return _("RPC: (unknown error code)");
 262 }
 263 libc_hidden_def (clnt_sperrno)
 264
 265 void
 266 clnt_perrno (enum clnt_stat num)
 267 {
 268   (void) __fxprintf (NULL, "%s", clnt_sperrno (num));
 269 }
 270 #ifdef EXPORT_RPC_SYMBOLS
 271 libc_hidden_def (clnt_perrno)
 272 #else
 273 libc_hidden_nolink_sunrpc (clnt_perrno, GLIBC_2_0)
 274 #endif
 275
 276 char *
 277 clnt_spcreateerror (const char *msg)
 278 {
 279   struct rpc_createerr *ce = &get_rpc_createerr ();
 280
 281   char chrbuf[1024];
 282   const char *connector = "";
 283   const char *errstr = "";
 284   switch (ce->cf_stat)
 285     {
 286     case RPC_PMAPFAILURE:
 287       connector = " - ";
 288       errstr = clnt_sperrno (ce->cf_error.re_status);
 289       break;
 290
 291     case RPC_SYSTEMERROR:
 292       connector = " - ";
 293       errstr = __strerror_r (ce->cf_error.re_errno, chrbuf, sizeof chrbuf);
 294       break;
 295
 296     default:
 297       break;
 298     }
 299
 300   char *str;
 301   if (__asprintf (&str, "%s: %s%s%s\n",
 302                   msg, clnt_sperrno (ce->cf_stat), connector, errstr) < 0)
 303     return NULL;
 304
 305   char *oldbuf = buf;
 306   buf = str;
 307   free (oldbuf);
 308
 309   return str;
 310 }
 311 libc_hidden_nolink_sunrpc (clnt_spcreateerror, GLIBC_2_0)
 312
 313 void
 314 clnt_pcreateerror (const char *msg)
 315 {
 316   (void) __fxprintf (NULL, "%s", clnt_spcreateerror (msg));
 317 }
 318 #ifdef EXPORT_RPC_SYMBOLS
 319 libc_hidden_def (clnt_pcreateerror)
 320 #else
 321 libc_hidden_nolink_sunrpc (clnt_pcreateerror, GLIBC_2_0)
 322 #endif
 323
 324 struct auth_errtab
 325 {
 326   enum auth_stat status;
 327   unsigned int message_off;
 328 };
 329
 330 static const char auth_errstr[] =
 331 {
 332 #define AUTH_OK_IDX             0
 333    N_("Authentication OK")
 334    "\0"
 335 #define AUTH_BADCRED_IDX        (AUTH_OK_IDX + sizeof "Authentication OK")
 336    N_("Invalid client credential")
 337    "\0"
 338 #define AUTH_REJECTEDCRED_IDX   (AUTH_BADCRED_IDX \
 339                                  + sizeof "Invalid client credential")
 340    N_("Server rejected credential")
 341    "\0"
 342 #define AUTH_BADVERF_IDX        (AUTH_REJECTEDCRED_IDX \
 343                                  + sizeof "Server rejected credential")
 344    N_("Invalid client verifier")
 345    "\0"
 346 #define AUTH_REJECTEDVERF_IDX   (AUTH_BADVERF_IDX \
 347                                  + sizeof "Invalid client verifier")
 348    N_("Server rejected verifier")
 349    "\0"
 350 #define AUTH_TOOWEAK_IDX        (AUTH_REJECTEDVERF_IDX \
 351                                  + sizeof "Server rejected verifier")
 352    N_("Client credential too weak")
 353    "\0"
 354 #define AUTH_INVALIDRESP_IDX    (AUTH_TOOWEAK_IDX \
 355                                  + sizeof "Client credential too weak")
 356    N_("Invalid server verifier")
 357    "\0"
 358 #define AUTH_FAILED_IDX         (AUTH_INVALIDRESP_IDX \
 359                                  + sizeof "Invalid server verifier")
 360    N_("Failed (unspecified error)")
 361 };
 362
 363 static const struct auth_errtab auth_errlist[] =
 364 {
 365   { AUTH_OK, AUTH_OK_IDX },
 366   { AUTH_BADCRED, AUTH_BADCRED_IDX },
 367   { AUTH_REJECTEDCRED, AUTH_REJECTEDCRED_IDX },
 368   { AUTH_BADVERF, AUTH_BADVERF_IDX },
 369   { AUTH_REJECTEDVERF, AUTH_REJECTEDVERF_IDX },
 370   { AUTH_TOOWEAK, AUTH_TOOWEAK_IDX },
 371   { AUTH_INVALIDRESP, AUTH_INVALIDRESP_IDX },
 372   { AUTH_FAILED, AUTH_FAILED_IDX }
 373 };
 374
 375 static char *
 376 internal_function
 377 auth_errmsg (enum auth_stat stat)
 378 {
 379   size_t i;
 380
 381   for (i = 0; i < sizeof (auth_errlist) / sizeof (struct auth_errtab); i++)
 382     {
 383       if (auth_errlist[i].status == stat)
 384         {
 385           return _(auth_errstr + auth_errlist[i].message_off);
 386         }
 387     }
 388   return NULL;
 389 }
 390
 391
 392 libc_freeres_fn (free_mem)
 393 {
 394   /* Not libc_freeres_ptr, since buf is a macro.  */
 395   free (buf);
 396 }