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 30 #if defined(LIBC_SCCS) && !defined(lint) 31 static char *rcsid = "$OpenBSD: clnt_perror.c,v 1.10 1998/12/30 22:26:18 deraadt Exp $"; 32 #endif /* LIBC_SCCS and not lint */ 33 34 /* 35 * clnt_perror.c 36 * 37 * Copyright (C) 1984, Sun Microsystems, Inc. 38 * 39 */ 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 #include <rpc/rpc.h> 44 #include <rpc/types.h> 45 #include <rpc/auth.h> 46 #include <rpc/clnt.h> 47 48 static char *auth_errmsg(); 49 #define CLNT_PERROR_BUFLEN 256 50 51 static char *buf; 52 53 static char * 54 _buf() 55 { 56 57 if (buf == 0) 58 buf = (char *)malloc(CLNT_PERROR_BUFLEN); 59 return (buf); 60 } 61 62 /* 63 * Print reply error info 64 */ 65 char * 66 clnt_sperror(rpch, s) 67 CLIENT *rpch; 68 char *s; 69 { 70 struct rpc_err e; 71 char *err; 72 char *str = _buf(); 73 char *strstart = str; 74 int ret; 75 76 if (str == 0) 77 return (0); 78 CLNT_GETERR(rpch, &e); 79 80 ret = snprintf(str, CLNT_PERROR_BUFLEN, "%s: %s", s, 81 clnt_sperrno(e.re_status)); 82 str += ret; 83 if (str > strstart + CLNT_PERROR_BUFLEN) 84 goto truncated; 85 86 switch (e.re_status) { 87 case RPC_SUCCESS: 88 case RPC_CANTENCODEARGS: 89 case RPC_CANTDECODERES: 90 case RPC_TIMEDOUT: 91 case RPC_PROGUNAVAIL: 92 case RPC_PROCUNAVAIL: 93 case RPC_CANTDECODEARGS: 94 case RPC_SYSTEMERROR: 95 case RPC_UNKNOWNHOST: 96 case RPC_UNKNOWNPROTO: 97 case RPC_PMAPFAILURE: 98 case RPC_PROGNOTREGISTERED: 99 case RPC_FAILED: 100 break; 101 102 case RPC_CANTSEND: 103 case RPC_CANTRECV: 104 ret = snprintf(str, CLNT_PERROR_BUFLEN - (str - strstart), 105 "; errno = %s\n", strerror(e.re_errno)); 106 break; 107 108 case RPC_VERSMISMATCH: 109 ret = snprintf(str, CLNT_PERROR_BUFLEN - (str - strstart), 110 "; low version = %u, high version = %u\n", 111 e.re_vers.low, e.re_vers.high); 112 break; 113 114 case RPC_AUTHERROR: 115 err = auth_errmsg(e.re_why); 116 ret = snprintf(str, CLNT_PERROR_BUFLEN - (str - strstart), 117 "; why = "); 118 str += ret; 119 if (str > strstart + CLNT_PERROR_BUFLEN) 120 goto truncated; 121 if (err != NULL) { 122 ret = snprintf(str, CLNT_PERROR_BUFLEN - 123 (str - strstart), "%s\n", err); 124 } else { 125 ret = snprintf(str, CLNT_PERROR_BUFLEN - 126 (str - strstart), 127 "(unknown authentication error - %d)\n", 128 (int) e.re_why); 129 } 130 break; 131 132 case RPC_PROGVERSMISMATCH: 133 ret = snprintf(str, CLNT_PERROR_BUFLEN - (str - strstart), 134 "; low version = %u, high version = %u\n", 135 e.re_vers.low, e.re_vers.high); 136 break; 137 138 default: /* unknown */ 139 ret = snprintf(str, CLNT_PERROR_BUFLEN - (str - strstart), 140 "; s1 = %u, s2 = %u\n", e.re_lb.s1, e.re_lb.s2); 141 break; 142 } 143 strstart[CLNT_PERROR_BUFLEN-2] = '\0'; 144 strcat(strstart, "\n"); 145 return (strstart); 146 147 truncated: 148 snprintf(strstart + CLNT_PERROR_BUFLEN - 5, 5, "...\n"); 149 return (strstart); 150 } 151 152 void 153 clnt_perror(rpch, s) 154 CLIENT *rpch; 155 char *s; 156 { 157 (void) fprintf(stderr, "%s\n", clnt_sperror(rpch, s)); 158 } 159 160 static const char *const rpc_errlist[] = { 161 "RPC: Success", /* 0 - RPC_SUCCESS */ 162 "RPC: Can't encode arguments", /* 1 - RPC_CANTENCODEARGS */ 163 "RPC: Can't decode result", /* 2 - RPC_CANTDECODERES */ 164 "RPC: Unable to send", /* 3 - RPC_CANTSEND */ 165 "RPC: Unable to receive", /* 4 - RPC_CANTRECV */ 166 "RPC: Timed out", /* 5 - RPC_TIMEDOUT */ 167 "RPC: Incompatible versions of RPC", /* 6 - RPC_VERSMISMATCH */ 168 "RPC: Authentication error", /* 7 - RPC_AUTHERROR */ 169 "RPC: Program unavailable", /* 8 - RPC_PROGUNAVAIL */ 170 "RPC: Program/version mismatch", /* 9 - RPC_PROGVERSMISMATCH */ 171 "RPC: Procedure unavailable", /* 10 - RPC_PROCUNAVAIL */ 172 "RPC: Server can't decode arguments", /* 11 - RPC_CANTDECODEARGS */ 173 "RPC: Remote system error", /* 12 - RPC_SYSTEMERROR */ 174 "RPC: Unknown host", /* 13 - RPC_UNKNOWNHOST */ 175 "RPC: Port mapper failure", /* 14 - RPC_PMAPFAILURE */ 176 "RPC: Program not registered", /* 15 - RPC_PROGNOTREGISTERED */ 177 "RPC: Failed (unspecified error)", /* 16 - RPC_FAILED */ 178 "RPC: Unknown protocol" /* 17 - RPC_UNKNOWNPROTO */ 179 }; 180 181 182 /* 183 * This interface for use by clntrpc 184 */ 185 char * 186 clnt_sperrno(stat) 187 enum clnt_stat stat; 188 { 189 unsigned int errnum = stat; 190 191 if (errnum < (sizeof(rpc_errlist)/sizeof(rpc_errlist[0]))) 192 return (char *)rpc_errlist[errnum]; 193 194 return ("RPC: (unknown error code)"); 195 } 196 197 void 198 clnt_perrno(num) 199 enum clnt_stat num; 200 { 201 (void) fprintf(stderr, "%s\n", clnt_sperrno(num)); 202 } 203 204 205 char * 206 clnt_spcreateerror(s) 207 char *s; 208 { 209 char *str = _buf(); 210 211 if (str == 0) 212 return (0); 213 214 switch (rpc_createerr.cf_stat) { 215 case RPC_PMAPFAILURE: 216 (void) snprintf(str, CLNT_PERROR_BUFLEN, "%s: %s - %s\n", s, 217 clnt_sperrno(rpc_createerr.cf_stat), 218 clnt_sperrno(rpc_createerr.cf_error.re_status)); 219 break; 220 221 case RPC_SYSTEMERROR: 222 (void) snprintf(str, CLNT_PERROR_BUFLEN, "%s: %s - %s\n", s, 223 clnt_sperrno(rpc_createerr.cf_stat), 224 strerror(rpc_createerr.cf_error.re_errno)); 225 break; 226 227 default: 228 (void) snprintf(str, CLNT_PERROR_BUFLEN, "%s: %s\n", s, 229 clnt_sperrno(rpc_createerr.cf_stat)); 230 break; 231 } 232 str[CLNT_PERROR_BUFLEN-2] = '\n'; 233 str[CLNT_PERROR_BUFLEN-1] = '\0'; 234 return (str); 235 } 236 237 void 238 clnt_pcreateerror(s) 239 char *s; 240 { 241 (void) fprintf(stderr, "%s", clnt_spcreateerror(s)); 242 } 243 244 static const char *const auth_errlist[] = { 245 "Authentication OK", /* 0 - AUTH_OK */ 246 "Invalid client credential", /* 1 - AUTH_BADCRED */ 247 "Server rejected credential", /* 2 - AUTH_REJECTEDCRED */ 248 "Invalid client verifier", /* 3 - AUTH_BADVERF */ 249 "Server rejected verifier", /* 4 - AUTH_REJECTEDVERF */ 250 "Client credential too weak", /* 5 - AUTH_TOOWEAK */ 251 "Invalid server verifier", /* 6 - AUTH_INVALIDRESP */ 252 "Failed (unspecified error)" /* 7 - AUTH_FAILED */ 253 }; 254 255 static char * 256 auth_errmsg(stat) 257 enum auth_stat stat; 258 { 259 unsigned int errnum = stat; 260 261 if (errnum < (sizeof(auth_errlist)/sizeof(auth_errlist[0]))) 262 return (char *)auth_errlist[errnum]; 263 264 return (NULL); 265 } 266