lib/libc/rpc/clnt_perror.c

   1 /*
   2  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   3  * unrestricted use provided that this legend is included on all tape
   4  * media and as a part of the software program in whole or part.  Users
   5  * may copy or modify Sun RPC without charge, but are not authorized
   6  * to license or distribute it to anyone else except as part of a product or
   7  * program developed by the user.
   8  *
   9  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  10  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  11  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  12  *
  13  * Sun RPC is provided with no support and without any obligation on the
  14  * part of Sun Microsystems, Inc. to assist in its use, correction,
  15  * modification or enhancement.
  16  *
  17  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  18  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  19  * OR ANY PART THEREOF.
  20  *
  21  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  22  * or profits or other special, indirect and consequential damages, even if
  23  * Sun has been advised of the possibility of such damages.
  24  *
  25  * Sun Microsystems, Inc.
  26  * 2550 Garcia Avenue
  27  * Mountain View, California  94043
  28  *
  29  * @(#)clnt_perror.c 1.15 87/10/07 Copyr 1984 Sun Micro
  30  * @(#)clnt_perror.c    2.1 88/07/29 4.0 RPCSRC
  31  * $NetBSD: clnt_perror.c,v 1.24 2000/06/02 23:11:07 fvdl Exp $
  32  * $FreeBSD: src/lib/libc/rpc/clnt_perror.c,v 1.17 2004/10/16 06:11:34 obrien Exp $
  33  * $DragonFly: src/lib/libc/rpc/clnt_perror.c,v 1.5 2005/11/13 12:27:04 swildner Exp $
  34  */
  35
  36 /*
  37  * clnt_perror.c
  38  *
  39  * Copyright (C) 1984, Sun Microsystems, Inc.
  40  *
  41  */
  42 #include "namespace.h"
  43 #include <assert.h>
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46 #include <string.h>
  47
  48 #include <rpc/rpc.h>
  49 #include <rpc/types.h>
  50 #include <rpc/auth.h>
  51 #include <rpc/clnt.h>
  52 #include "un-namespace.h"
  53
  54 static char *buf;
  55
  56 static char *_buf(void);
  57 static char *auth_errmsg(enum auth_stat);
  58 #define CLNT_PERROR_BUFLEN 256
  59
  60 static char *
  61 _buf(void)
  62 {
  63
  64         if (buf == 0)
  65                 buf = (char *)malloc(CLNT_PERROR_BUFLEN);
  66         return (buf);
  67 }
  68
  69 /*
  70  * Print reply error info
  71  */
  72 char *
  73 clnt_sperror(CLIENT *rpch, const char *s)
  74 {
  75         struct rpc_err e;
  76         char *err;
  77         char *str;
  78         char *strstart;
  79         size_t len, i;
  80
  81         assert(rpch != NULL);
  82         assert(s != NULL);
  83
  84         str = _buf(); /* side effect: sets CLNT_PERROR_BUFLEN */
  85         if (str == 0)
  86                 return (0);
  87         len = CLNT_PERROR_BUFLEN;
  88         strstart = str;
  89         CLNT_GETERR(rpch, &e);
  90
  91         if ((i = snprintf(str, len, "%s: ", s)) > 0) {
  92                 str += i;
  93                 len -= i;
  94         }
  95
  96         strncpy(str, clnt_sperrno(e.re_status), len - 1);
  97         i = strlen(str);
  98         str += i;
  99         len -= i;
 100
 101         switch (e.re_status) {
 102         case RPC_SUCCESS:
 103         case RPC_CANTENCODEARGS:
 104         case RPC_CANTDECODERES:
 105         case RPC_TIMEDOUT:
 106         case RPC_PROGUNAVAIL:
 107         case RPC_PROCUNAVAIL:
 108         case RPC_CANTDECODEARGS:
 109         case RPC_SYSTEMERROR:
 110         case RPC_UNKNOWNHOST:
 111         case RPC_UNKNOWNPROTO:
 112         case RPC_PMAPFAILURE:
 113         case RPC_PROGNOTREGISTERED:
 114         case RPC_FAILED:
 115                 break;
 116
 117         case RPC_CANTSEND:
 118         case RPC_CANTRECV:
 119                 i = snprintf(str, len, "; errno = %s", strerror(e.re_errno));
 120                 if (i > 0) {
 121                         str += i;
 122                         len -= i;
 123                 }
 124                 break;
 125
 126         case RPC_VERSMISMATCH:
 127                 i = snprintf(str, len, "; low version = %u, high version = %u",
 128                         e.re_vers.low, e.re_vers.high);
 129                 if (i > 0) {
 130                         str += i;
 131                         len -= i;
 132                 }
 133                 break;
 134
 135         case RPC_AUTHERROR:
 136                 err = auth_errmsg(e.re_why);
 137                 i = snprintf(str, len, "; why = ");
 138                 if (i > 0) {
 139                         str += i;
 140                         len -= i;
 141                 }
 142                 if (err != NULL) {
 143                         i = snprintf(str, len, "%s",err);
 144                 } else {
 145                         i = snprintf(str, len,
 146                                 "(unknown authentication error - %d)",
 147                                 (int) e.re_why);
 148                 }
 149                 if (i > 0) {
 150                         str += i;
 151                         len -= i;
 152                 }
 153                 break;
 154
 155         case RPC_PROGVERSMISMATCH:
 156                 i = snprintf(str, len, "; low version = %u, high version = %u",
 157                         e.re_vers.low, e.re_vers.high);
 158                 if (i > 0) {
 159                         str += i;
 160                         len -= i;
 161                 }
 162                 break;
 163
 164         default:        /* unknown */
 165                 i = snprintf(str, len, "; s1 = %u, s2 = %u",
 166                         e.re_lb.s1, e.re_lb.s2);
 167                 if (i > 0) {
 168                         str += i;
 169                         len -= i;
 170                 }
 171                 break;
 172         }
 173         strstart[CLNT_PERROR_BUFLEN-1] = '\0';
 174         return(strstart) ;
 175 }
 176
 177 void
 178 clnt_perror(CLIENT *rpch, const char *s)
 179 {
 180
 181         assert(rpch != NULL);
 182         assert(s != NULL);
 183
 184         fprintf(stderr, "%s\n", clnt_sperror(rpch,s));
 185 }
 186
 187 static const char *const rpc_errlist[] = {
 188         "RPC: Success",                         /*  0 - RPC_SUCCESS */
 189         "RPC: Can't encode arguments",          /*  1 - RPC_CANTENCODEARGS */
 190         "RPC: Can't decode result",             /*  2 - RPC_CANTDECODERES */
 191         "RPC: Unable to send",                  /*  3 - RPC_CANTSEND */
 192         "RPC: Unable to receive",               /*  4 - RPC_CANTRECV */
 193         "RPC: Timed out",                       /*  5 - RPC_TIMEDOUT */
 194         "RPC: Incompatible versions of RPC",    /*  6 - RPC_VERSMISMATCH */
 195         "RPC: Authentication error",            /*  7 - RPC_AUTHERROR */
 196         "RPC: Program unavailable",             /*  8 - RPC_PROGUNAVAIL */
 197         "RPC: Program/version mismatch",        /*  9 - RPC_PROGVERSMISMATCH */
 198         "RPC: Procedure unavailable",           /* 10 - RPC_PROCUNAVAIL */
 199         "RPC: Server can't decode arguments",   /* 11 - RPC_CANTDECODEARGS */
 200         "RPC: Remote system error",             /* 12 - RPC_SYSTEMERROR */
 201         "RPC: Unknown host",                    /* 13 - RPC_UNKNOWNHOST */
 202         "RPC: Port mapper failure",             /* 14 - RPC_PMAPFAILURE */
 203         "RPC: Program not registered",          /* 15 - RPC_PROGNOTREGISTERED */
 204         "RPC: Failed (unspecified error)",      /* 16 - RPC_FAILED */
 205         "RPC: Unknown protocol"                 /* 17 - RPC_UNKNOWNPROTO */
 206 };
 207
 208
 209 /*
 210  * This interface for use by clntrpc
 211  */
 212 char *
 213 clnt_sperrno(enum clnt_stat stat)
 214 {
 215         unsigned int errnum = stat;
 216
 217         if (errnum < (sizeof(rpc_errlist)/sizeof(rpc_errlist[0])))
 218                 /* LINTED interface problem */
 219                 return (char *)rpc_errlist[errnum];
 220
 221         return ("RPC: (unknown error code)");
 222 }
 223
 224 void
 225 clnt_perrno(enum clnt_stat num)
 226 {
 227         fprintf(stderr, "%s\n", clnt_sperrno(num));
 228 }
 229
 230
 231 char *
 232 clnt_spcreateerror(const char *s)
 233 {
 234         char *str;
 235         size_t len, i;
 236
 237         assert(s != NULL);
 238
 239         str = _buf(); /* side effect: sets CLNT_PERROR_BUFLEN */
 240         if (str == 0)
 241                 return(0);
 242         len = CLNT_PERROR_BUFLEN;
 243         i = snprintf(str, len, "%s: ", s);
 244         if (i > 0)
 245                 len -= i;
 246         strncat(str, clnt_sperrno(rpc_createerr.cf_stat), len - 1);
 247         switch (rpc_createerr.cf_stat) {
 248         case RPC_PMAPFAILURE:
 249                 strncat(str, " - ", len - 1);
 250                 strncat(str,
 251                     clnt_sperrno(rpc_createerr.cf_error.re_status), len - 4);
 252                 break;
 253
 254         case RPC_SYSTEMERROR:
 255                 strncat(str, " - ", len - 1);
 256                 strncat(str, strerror(rpc_createerr.cf_error.re_errno),
 257                     len - 4);
 258                 break;
 259
 260         case RPC_CANTSEND:
 261         case RPC_CANTDECODERES:
 262         case RPC_CANTENCODEARGS:
 263         case RPC_SUCCESS:
 264         case RPC_UNKNOWNPROTO:
 265         case RPC_PROGNOTREGISTERED:
 266         case RPC_FAILED:
 267         case RPC_UNKNOWNHOST:
 268         case RPC_CANTDECODEARGS:
 269         case RPC_PROCUNAVAIL:
 270         case RPC_PROGVERSMISMATCH:
 271         case RPC_PROGUNAVAIL:
 272         case RPC_AUTHERROR:
 273         case RPC_VERSMISMATCH:
 274         case RPC_TIMEDOUT:
 275         case RPC_CANTRECV:
 276         default:
 277                 break;
 278         }
 279         str[CLNT_PERROR_BUFLEN-1] = '\0';
 280         return (str);
 281 }
 282
 283 void
 284 clnt_pcreateerror(const char *s)
 285 {
 286
 287         assert(s != NULL);
 288
 289         fprintf(stderr, "%s\n", clnt_spcreateerror(s));
 290 }
 291
 292 static const char *const auth_errlist[] = {
 293         "Authentication OK",                    /* 0 - AUTH_OK */
 294         "Invalid client credential",            /* 1 - AUTH_BADCRED */
 295         "Server rejected credential",           /* 2 - AUTH_REJECTEDCRED */
 296         "Invalid client verifier",              /* 3 - AUTH_BADVERF */
 297         "Server rejected verifier",             /* 4 - AUTH_REJECTEDVERF */
 298         "Client credential too weak",           /* 5 - AUTH_TOOWEAK */
 299         "Invalid server verifier",              /* 6 - AUTH_INVALIDRESP */
 300         "Failed (unspecified error)"            /* 7 - AUTH_FAILED */
 301 };
 302
 303 static char *
 304 auth_errmsg(enum auth_stat stat)
 305 {
 306         unsigned int errnum = stat;
 307
 308         if (errnum < (sizeof(auth_errlist)/sizeof(auth_errlist[0])))
 309                 /* LINTED interface problem */
 310                 return (char *)auth_errlist[errnum];
 311
 312         return(NULL);
 313 }