251 lines
6.9 KiB
C
251 lines
6.9 KiB
C
/* $OpenBSD: clnt_perror.c,v 1.25 2019/07/03 03:24:04 deraadt Exp $ */
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/*
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* Copyright (c) 2010, Oracle America, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* * Neither the name of the "Oracle America, Inc." nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <rpc/rpc.h>
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#include <rpc/types.h>
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#include <rpc/auth.h>
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#include <rpc/clnt.h>
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static char *auth_errmsg(enum auth_stat stat);
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#define CLNT_PERROR_BUFLEN 256
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static char buf[CLNT_PERROR_BUFLEN];
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/*
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* Print reply error info
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*/
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char *
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clnt_sperror(CLIENT *rpch, char *s)
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{
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char *err, *str = buf;
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struct rpc_err e;
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int ret, len = CLNT_PERROR_BUFLEN;
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CLNT_GETERR(rpch, &e);
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ret = snprintf(str, len, "%s: %s", s, clnt_sperrno(e.re_status));
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if (ret < 0)
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ret = 0;
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else if (ret >= len)
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goto truncated;
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str += ret;
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len -= ret;
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switch (e.re_status) {
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case RPC_SUCCESS:
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case RPC_CANTENCODEARGS:
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case RPC_CANTDECODERES:
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case RPC_TIMEDOUT:
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case RPC_PROGUNAVAIL:
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case RPC_PROCUNAVAIL:
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case RPC_CANTDECODEARGS:
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case RPC_SYSTEMERROR:
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case RPC_UNKNOWNHOST:
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case RPC_UNKNOWNPROTO:
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case RPC_PMAPFAILURE:
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case RPC_PROGNOTREGISTERED:
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case RPC_FAILED:
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break;
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case RPC_CANTSEND:
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case RPC_CANTRECV:
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ret = snprintf(str, len, "; errno = %s", strerror(e.re_errno));
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if (ret < 0 || ret >= len)
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goto truncated;
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break;
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case RPC_VERSMISMATCH:
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ret = snprintf(str, len,
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"; low version = %u, high version = %u",
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e.re_vers.low, e.re_vers.high);
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if (ret < 0 || ret >= len)
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goto truncated;
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break;
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case RPC_AUTHERROR:
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ret = snprintf(str, len, "; why = ");
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if (ret < 0)
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ret = 0;
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else if (ret >= len)
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goto truncated;
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str += ret;
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len -= ret;
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err = auth_errmsg(e.re_why);
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if (err != NULL) {
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ret = snprintf(str, len, "%s", err);
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if (ret < 0 || ret >= len)
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goto truncated;
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} else {
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ret = snprintf(str, len,
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"(unknown authentication error - %d)",
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(int) e.re_why);
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if (ret < 0 || ret >= len)
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goto truncated;
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}
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break;
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case RPC_PROGVERSMISMATCH:
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ret = snprintf(str, len,
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"; low version = %u, high version = %u",
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e.re_vers.low, e.re_vers.high);
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if (ret < 0 || ret >= len)
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goto truncated;
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break;
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default: /* unknown */
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ret = snprintf(str, len, "; s1 = %u, s2 = %u",
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e.re_lb.s1, e.re_lb.s2);
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if (ret < 0 || ret >= len)
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goto truncated;
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break;
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}
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if (strlcat(buf, "\n", CLNT_PERROR_BUFLEN) >= CLNT_PERROR_BUFLEN)
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goto truncated;
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return (buf);
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truncated:
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snprintf(buf + CLNT_PERROR_BUFLEN - 5, 5, "...\n");
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return (buf);
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}
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DEF_WEAK(clnt_sperror);
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void
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clnt_perror(CLIENT *rpch, char *s)
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{
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(void) fprintf(stderr, "%s", clnt_sperror(rpch, s));
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}
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DEF_WEAK(clnt_perror);
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static const char *const rpc_errlist[] = {
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"RPC: Success", /* 0 - RPC_SUCCESS */
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"RPC: Can't encode arguments", /* 1 - RPC_CANTENCODEARGS */
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"RPC: Can't decode result", /* 2 - RPC_CANTDECODERES */
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"RPC: Unable to send", /* 3 - RPC_CANTSEND */
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"RPC: Unable to receive", /* 4 - RPC_CANTRECV */
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"RPC: Timed out", /* 5 - RPC_TIMEDOUT */
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"RPC: Incompatible versions of RPC", /* 6 - RPC_VERSMISMATCH */
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"RPC: Authentication error", /* 7 - RPC_AUTHERROR */
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"RPC: Program unavailable", /* 8 - RPC_PROGUNAVAIL */
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"RPC: Program/version mismatch", /* 9 - RPC_PROGVERSMISMATCH */
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"RPC: Procedure unavailable", /* 10 - RPC_PROCUNAVAIL */
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"RPC: Server can't decode arguments", /* 11 - RPC_CANTDECODEARGS */
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"RPC: Remote system error", /* 12 - RPC_SYSTEMERROR */
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"RPC: Unknown host", /* 13 - RPC_UNKNOWNHOST */
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"RPC: Port mapper failure", /* 14 - RPC_PMAPFAILURE */
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"RPC: Program not registered", /* 15 - RPC_PROGNOTREGISTERED */
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"RPC: Failed (unspecified error)", /* 16 - RPC_FAILED */
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"RPC: Unknown protocol" /* 17 - RPC_UNKNOWNPROTO */
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};
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/*
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* This interface for use by clntrpc
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*/
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char *
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clnt_sperrno(enum clnt_stat stat)
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{
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unsigned int errnum = stat;
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if (errnum < (sizeof(rpc_errlist)/sizeof(rpc_errlist[0])))
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return (char *)rpc_errlist[errnum];
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return ("RPC: (unknown error code)");
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}
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DEF_WEAK(clnt_sperrno);
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void
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clnt_perrno(enum clnt_stat num)
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{
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(void) fprintf(stderr, "%s\n", clnt_sperrno(num));
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}
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char *
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clnt_spcreateerror(char *s)
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{
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switch (rpc_createerr.cf_stat) {
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case RPC_PMAPFAILURE:
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(void) snprintf(buf, CLNT_PERROR_BUFLEN, "%s: %s - %s\n", s,
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clnt_sperrno(rpc_createerr.cf_stat),
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clnt_sperrno(rpc_createerr.cf_error.re_status));
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break;
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case RPC_SYSTEMERROR:
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(void) snprintf(buf, CLNT_PERROR_BUFLEN, "%s: %s - %s\n", s,
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clnt_sperrno(rpc_createerr.cf_stat),
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strerror(rpc_createerr.cf_error.re_errno));
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break;
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default:
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(void) snprintf(buf, CLNT_PERROR_BUFLEN, "%s: %s\n", s,
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clnt_sperrno(rpc_createerr.cf_stat));
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break;
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}
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buf[CLNT_PERROR_BUFLEN-2] = '\n';
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buf[CLNT_PERROR_BUFLEN-1] = '\0';
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return (buf);
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}
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DEF_WEAK(clnt_spcreateerror);
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void
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clnt_pcreateerror(char *s)
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{
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fprintf(stderr, "%s", clnt_spcreateerror(s));
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}
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DEF_WEAK(clnt_pcreateerror);
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static const char *const auth_errlist[] = {
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"Authentication OK", /* 0 - AUTH_OK */
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"Invalid client credential", /* 1 - AUTH_BADCRED */
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"Server rejected credential", /* 2 - AUTH_REJECTEDCRED */
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"Invalid client verifier", /* 3 - AUTH_BADVERF */
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"Server rejected verifier", /* 4 - AUTH_REJECTEDVERF */
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"Client credential too weak", /* 5 - AUTH_TOOWEAK */
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"Invalid server verifier", /* 6 - AUTH_INVALIDRESP */
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"Failed (unspecified error)" /* 7 - AUTH_FAILED */
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};
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static char *
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auth_errmsg(enum auth_stat stat)
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{
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unsigned int errnum = stat;
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if (errnum < (sizeof(auth_errlist)/sizeof(auth_errlist[0])))
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return (char *)auth_errlist[errnum];
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return (NULL);
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}
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